1 |
two-sum |
Cpp |
π |
Easy |
2 |
add-two-numbers |
Cpp |
π |
Medium |
3 |
longest-substring-without-repeating-characters |
Cpp |
π |
Medium |
4 |
median-of-two-sorted-arrays |
Cpp |
π |
Hard |
5 |
longest-palindromic-substring |
Cpp |
π |
Medium |
6 |
zigzag-conversion |
|
π |
Medium |
7 |
reverse-integer |
Cpp |
π |
Easy |
8 |
string-to-integer-atoi |
Cpp |
|
Medium |
9 |
palindrome-number |
Cpp |
π |
Easy |
10 |
regular-expression-matching |
|
π |
Hard |
11 |
container-with-most-water |
Cpp |
π |
Medium |
12 |
integer-to-roman |
|
|
Medium |
13 |
roman-to-integer |
|
|
Easy |
14 |
longest-common-prefix |
Cpp |
π |
Easy |
15 |
3sum |
Cpp |
|
Medium |
16 |
3sum-closest |
Cpp |
|
Medium |
17 |
letter-combinations-of-a-phone-number |
Cpp |
π |
Medium |
18 |
4sum |
Cpp |
|
Medium |
19 |
remove-nth-node-from-end-of-list |
Cpp |
π |
Medium |
20 |
valid-parentheses |
Cpp |
π |
Easy |
21 |
merge-two-sorted-lists |
Cpp |
π |
Easy |
22 |
generate-parentheses |
Cpp |
π |
Medium |
23 |
merge-k-sorted-lists |
Cpp |
π |
Hard |
24 |
swap-nodes-in-pairs |
Cpp |
|
Medium |
25 |
reverse-nodes-in-k-group |
Cpp |
|
Hard |
26 |
remove-duplicates-from-sorted-array |
Cpp |
π |
Easy |
27 |
remove-element |
Cpp |
π |
Easy |
28 |
implement-strstr |
Cpp |
|
Easy |
29 |
divide-two-integers |
Cpp |
|
Medium |
30 |
substring-with-concatenation-of-all-words |
|
|
Hard |
31 |
next-permutation |
Cpp |
π |
Medium |
32 |
longest-valid-parentheses |
Cpp |
π |
Hard |
33 |
search-in-rotated-sorted-array |
Cpp |
π |
Medium |
34 |
find-first-and-last-position-of-element-in-sorted-array |
Cpp |
π |
Medium |
35 |
search-insert-position |
Cpp |
|
Easy |
36 |
valid-sudoku |
Cpp |
π |
Medium |
37 |
sudoku-solver |
|
π |
Hard |
38 |
count-and-say |
|
|
Easy |
39 |
combination-sum |
Cpp |
|
Medium |
40 |
combination-sum-ii |
|
|
Medium |
41 |
first-missing-positive |
Cpp |
π |
Hard |
42 |
trapping-rain-water |
Cpp |
π |
Hard |
43 |
multiply-strings |
Cpp |
|
Medium |
44 |
wildcard-matching |
|
π |
Hard |
45 |
jump-game-ii |
Cpp |
|
Hard |
46 |
permutations |
Cpp |
π |
Medium |
47 |
permutations-ii |
Cpp |
|
Medium |
48 |
rotate-image |
Cpp |
π |
Medium |
49 |
group-anagrams |
Cpp |
π |
Medium |
50 |
powx-n |
Cpp |
π |
Medium |
51 |
n-queens |
|
π |
Hard |
52 |
n-queens-ii |
|
π |
Hard |
53 |
maximum-subarray |
Cpp |
π |
Easy |
54 |
spiral-matrix |
Cpp |
π |
Medium |
55 |
jump-game |
Cpp |
π |
Medium |
56 |
merge-intervals |
Cpp |
π |
Medium |
57 |
insert-interval |
Cpp |
π |
Hard |
58 |
length-of-last-word |
|
|
Easy |
59 |
spiral-matrix-ii |
Cpp |
|
Medium |
60 |
permutation-sequence |
Cpp |
|
Medium |
61 |
rotate-list |
Cpp |
π |
Medium |
62 |
unique-paths |
Cpp |
|
Medium |
63 |
unique-paths-ii |
Cpp |
π |
Medium |
64 |
minimum-path-sum |
Cpp |
π |
Medium |
65 |
valid-number |
|
|
Hard |
66 |
plus-one |
Cpp |
|
Easy |
67 |
add-binary |
Cpp |
|
Easy |
68 |
text-justification |
|
|
Hard |
69 |
sqrtx |
Cpp |
|
Easy |
70 |
climbing-stairs |
Cpp |
π |
Easy |
71 |
simplify-path |
|
|
Medium |
72 |
edit-distance |
Cpp |
π |
Hard |
73 |
set-matrix-zeroes |
Cpp |
π |
Medium |
74 |
search-a-2d-matrix |
Cpp |
π |
Medium |
75 |
sort-colors |
Cpp |
π |
Medium |
76 |
minimum-window-substring |
Cpp |
π |
Hard |
77 |
combinations |
|
π |
Medium |
78 |
subsets |
Cpp |
|
Medium |
79 |
word-search |
Cpp |
|
Medium |
80 |
remove-duplicates-from-sorted-array-ii |
Cpp |
|
Medium |
81 |
search-in-rotated-sorted-array-ii |
Cpp |
|
Medium |
82 |
remove-duplicates-from-sorted-list-ii |
Cpp |
|
Medium |
83 |
remove-duplicates-from-sorted-list |
Cpp |
π |
Easy |
84 |
largest-rectangle-in-histogram |
Cpp |
π |
Hard |
85 |
maximal-rectangle |
Cpp |
π |
Hard |
86 |
partition-list |
Cpp |
π |
Medium |
87 |
scramble-string |
|
|
Hard |
88 |
merge-sorted-array |
Cpp |
π |
Easy |
89 |
gray-code |
Cpp |
|
Medium |
90 |
subsets-ii |
|
|
Medium |
91 |
decode-ways |
Cpp |
|
Medium |
92 |
reverse-linked-list-ii |
Cpp |
π |
Medium |
93 |
restore-ip-addresses |
Cpp |
π |
Medium |
94 |
binary-tree-inorder-traversal |
Cpp |
π |
Medium |
95 |
unique-binary-search-trees-ii |
Cpp |
π |
Medium |
96 |
unique-binary-search-trees |
Cpp |
π |
Medium |
97 |
interleaving-string |
|
π |
Hard |
98 |
validate-binary-search-tree |
Cpp |
π |
Medium |
99 |
recover-binary-search-tree |
Cpp |
|
Hard |
100 |
same-tree |
Cpp |
π |
Easy |
101 |
symmetric-tree |
Cpp |
π |
Easy |
102 |
binary-tree-level-order-traversal |
Cpp |
π |
Medium |
103 |
binary-tree-zigzag-level-order-traversal |
Cpp |
|
Medium |
104 |
maximum-depth-of-binary-tree |
Cpp |
π |
Easy |
105 |
construct-binary-tree-from-preorder-and-inorder-traversal |
Cpp |
π |
Medium |
106 |
construct-binary-tree-from-inorder-and-postorder-traversal |
Cpp |
π |
Medium |
107 |
binary-tree-level-order-traversal-ii |
Cpp |
|
Easy |
108 |
convert-sorted-array-to-binary-search-tree |
Cpp |
|
Easy |
109 |
convert-sorted-list-to-binary-search-tree |
Cpp |
π |
Medium |
110 |
balanced-binary-tree |
Cpp |
|
Easy |
111 |
minimum-depth-of-binary-tree |
Cpp |
π |
Easy |
112 |
path-sum |
Cpp |
π |
Easy |
113 |
path-sum-ii |
Cpp |
|
Medium |
114 |
flatten-binary-tree-to-linked-list |
Cpp |
|
Medium |
115 |
distinct-subsequences |
Cpp |
|
Hard |
116 |
populating-next-right-pointers-in-each-node |
Cpp |
|
Medium |
117 |
populating-next-right-pointers-in-each-node-ii |
Cpp |
|
Medium |
118 |
pascals-triangle |
Cpp |
π |
Easy |
119 |
pascals-triangle-ii |
Cpp |
|
Easy |
120 |
triangle |
Cpp |
|
Medium |
121 |
best-time-to-buy-and-sell-stock |
Cpp |
π |
Easy |
122 |
best-time-to-buy-and-sell-stock-ii |
Cpp |
π |
Easy |
123 |
best-time-to-buy-and-sell-stock-iii |
Cpp |
|
Hard |
124 |
binary-tree-maximum-path-sum |
Cpp |
π |
Hard |
125 |
valid-palindrome |
Cpp |
|
Easy |
126 |
word-ladder-ii |
|
|
Hard |
127 |
word-ladder |
Cpp |
π |
Medium |
128 |
longest-consecutive-sequence |
Cpp |
π |
Hard |
129 |
sum-root-to-leaf-numbers |
Cpp |
|
Medium |
130 |
surrounded-regions |
Cpp |
|
Medium |
131 |
palindrome-partitioning |
|
|
Medium |
132 |
palindrome-partitioning-ii |
|
|
Hard |
133 |
clone-graph |
|
|
Medium |
134 |
gas-station |
Cpp |
π |
Medium |
135 |
candy |
|
π |
Hard |
136 |
single-number |
Cpp |
π |
Easy |
137 |
single-number-ii |
Cpp |
|
Medium |
138 |
copy-list-with-random-pointer |
Cpp |
π |
Medium |
139 |
word-break |
Cpp |
π |
Medium |
140 |
word-break-ii |
|
π |
Hard |
141 |
linked-list-cycle |
Cpp |
π |
Easy |
142 |
linked-list-cycle-ii |
Cpp |
π |
Medium |
143 |
reorder-list |
Cpp |
|
Medium |
144 |
binary-tree-preorder-traversal |
Cpp |
π |
Medium |
145 |
binary-tree-postorder-traversal |
Cpp |
π |
Hard |
146 |
lru-cache |
Cpp |
π |
Medium |
147 |
insertion-sort-list |
Cpp |
|
Medium |
148 |
sort-list |
Cpp |
|
Medium |
149 |
max-points-on-a-line |
Cpp |
π |
Hard |
150 |
evaluate-reverse-polish-notation |
|
|
Medium |
151 |
reverse-words-in-a-string |
Cpp |
|
Medium |
152 |
maximum-product-subarray |
Cpp |
|
Medium |
153 |
find-minimum-in-rotated-sorted-array |
Cpp |
π |
Medium |
154 |
find-minimum-in-rotated-sorted-array-ii |
Cpp |
|
Hard |
155 |
min-stack |
Cpp |
|
Easy |
156 |
binary-tree-upside-down |
π |
|
Medium |
157 |
read-n-characters-given-read4 |
π |
|
Easy |
158 |
read-n-characters-given-read4-ii-call-multiple-times |
π |
|
Hard |
159 |
longest-substring-with-at-most-two-distinct-characters |
π |
π |
Hard |
160 |
intersection-of-two-linked-lists |
Cpp |
π |
Easy |
161 |
one-edit-distance |
π |
π |
Medium |
162 |
find-peak-element |
Cpp |
π |
Medium |
163 |
missing-ranges |
π |
|
Medium |
164 |
maximum-gap |
Cpp |
π |
Hard |
165 |
compare-version-numbers |
|
|
Medium |
166 |
fraction-to-recurring-decimal |
|
π |
Medium |
167 |
two-sum-ii-input-array-is-sorted |
Cpp |
π |
Easy |
168 |
excel-sheet-column-title |
|
|
Easy |
169 |
majority-element |
Cpp |
π |
Easy |
170 |
two-sum-iii-data-structure-design |
π |
|
Easy |
171 |
excel-sheet-column-number |
|
|
Easy |
172 |
factorial-trailing-zeroes |
Cpp |
|
Easy |
173 |
binary-search-tree-iterator |
Cpp |
π |
Medium |
174 |
dungeon-game |
Cpp |
|
Hard |
179 |
largest-number |
Cpp |
π |
Medium |
186 |
reverse-words-in-a-string-ii |
π |
|
Medium |
187 |
repeated-dna-sequences |
Cpp |
|
Medium |
188 |
best-time-to-buy-and-sell-stock-iv |
|
|
Hard |
189 |
rotate-array |
Cpp |
π |
Easy |
190 |
reverse-bits |
|
|
Easy |
191 |
number-of-1-bits |
Cpp |
π |
Easy |
198 |
house-robber |
Cpp |
π |
Easy |
199 |
binary-tree-right-side-view |
Cpp |
π |
Medium |
200 |
number-of-islands |
Cpp |
π |
Medium |
201 |
bitwise-and-of-numbers-range |
|
|
Medium |
202 |
happy-number |
|
|
Easy |
203 |
remove-linked-list-elements |
Cpp |
|
Easy |
204 |
count-primes |
Cpp |
|
Easy |
205 |
isomorphic-strings |
Cpp |
|
Easy |
206 |
reverse-linked-list |
Cpp |
π |
Easy |
207 |
course-schedule |
Cpp |
|
Medium |
208 |
implement-trie-prefix-tree |
Cpp |
π |
Medium |
209 |
minimum-size-subarray-sum |
Cpp |
π |
Medium |
210 |
course-schedule-ii |
Cpp |
π |
Medium |
211 |
add-and-search-word-data-structure-design |
|
|
Medium |
212 |
word-search-ii |
|
|
Hard |
213 |
house-robber-ii |
|
|
Medium |
214 |
shortest-palindrome |
|
π |
Hard |
215 |
kth-largest-element-in-an-array |
|
π |
Medium |
216 |
combination-sum-iii |
|
|
Medium |
217 |
contains-duplicate |
Cpp |
π |
Easy |
218 |
the-skyline-problem |
|
π |
Hard |
219 |
contains-duplicate-ii |
Cpp |
π |
Easy |
220 |
contains-duplicate-iii |
|
π |
Medium |
221 |
maximal-square |
Cpp |
π |
Medium |
222 |
count-complete-tree-nodes |
|
|
Medium |
223 |
rectangle-area |
Cpp |
|
Medium |
224 |
basic-calculator |
|
|
Hard |
225 |
implement-stack-using-queues |
|
π |
Easy |
226 |
invert-binary-tree |
Cpp |
π |
Easy |
227 |
basic-calculator-ii |
|
|
Medium |
228 |
summary-ranges |
Cpp |
π |
Medium |
229 |
majority-element-ii |
Cpp |
|
Medium |
230 |
kth-smallest-element-in-a-bst |
Cpp |
π |
Medium |
231 |
power-of-two |
Cpp |
|
Easy |
232 |
implement-queue-using-stacks |
Cpp |
π |
Easy |
233 |
number-of-digit-one |
|
π |
Hard |
234 |
palindrome-linked-list |
Cpp |
|
Easy |
235 |
lowest-common-ancestor-of-a-binary-search-tree |
Cpp |
π |
Easy |
236 |
lowest-common-ancestor-of-a-binary-tree |
Cpp |
π |
Medium |
237 |
delete-node-in-a-linked-list |
Cpp |
π |
Easy |
238 |
product-of-array-except-self |
Cpp |
π |
Medium |
239 |
sliding-window-maximum |
|
π |
Hard |
240 |
search-a-2d-matrix-ii |
|
π |
Medium |
241 |
different-ways-to-add-parentheses |
|
|
Medium |
242 |
valid-anagram |
|
π |
Easy |
243 |
shortest-word-distance |
π |
π |
Easy |
244 |
shortest-word-distance-ii |
π |
π |
Medium |
245 |
shortest-word-distance-iii |
π |
|
Medium |
246 |
strobogrammatic-number |
π |
|
Easy |
247 |
strobogrammatic-number-ii |
π |
|
Medium |
248 |
strobogrammatic-number-iii |
π |
|
Hard |
249 |
group-shifted-strings |
π |
|
Medium |
250 |
count-univalue-subtrees |
π |
π |
Medium |
251 |
flatten-2d-vector |
π |
|
Medium |
252 |
meeting-rooms |
π |
π |
Easy |
253 |
meeting-rooms-ii |
π |
π |
Medium |
254 |
factor-combinations |
π |
|
Medium |
255 |
verify-preorder-sequence-in-binary-search-tree |
π |
|
Medium |
256 |
paint-house |
π |
|
Easy |
257 |
binary-tree-paths |
Cpp |
π |
Easy |
258 |
add-digits |
|
|
Easy |
259 |
3sum-smaller |
π |
π |
Medium |
260 |
single-number-iii |
|
|
Medium |
261 |
graph-valid-tree |
π |
|
Medium |
263 |
ugly-number |
|
|
Easy |
264 |
ugly-number-ii |
|
|
Medium |
265 |
paint-house-ii |
π |
|
Hard |
266 |
palindrome-permutation |
π |
π |
Easy |
267 |
palindrome-permutation-ii |
π |
π |
Medium |
268 |
missing-number |
Cpp |
π |
Easy |
269 |
alien-dictionary |
π |
|
Hard |
270 |
closest-binary-search-tree-value |
π |
|
Easy |
271 |
encode-and-decode-strings |
π |
|
Medium |
272 |
closest-binary-search-tree-value-ii |
π |
|
Hard |
273 |
integer-to-english-words |
|
π |
Hard |
274 |
h-index |
|
π |
Medium |
275 |
h-index-ii |
|
|
Medium |
276 |
paint-fence |
π |
|
Easy |
277 |
find-the-celebrity |
π |
|
Medium |
278 |
first-bad-version |
|
π |
Easy |
279 |
perfect-squares |
Cpp |
|
Medium |
280 |
wiggle-sort |
π |
π |
Medium |
281 |
zigzag-iterator |
π |
|
Medium |
282 |
expression-add-operators |
|
π |
Hard |
283 |
move-zeroes |
Cpp |
π |
Easy |
284 |
peeking-iterator |
|
|
Medium |
285 |
inorder-successor-in-bst |
π |
|
Medium |
286 |
walls-and-gates |
π |
π |
Medium |
287 |
find-the-duplicate-number |
Cpp |
π |
Medium |
288 |
unique-word-abbreviation |
π |
π |
Medium |
289 |
game-of-life |
|
π |
Medium |
290 |
word-pattern |
Cpp |
|
Easy |
291 |
word-pattern-ii |
π |
|
Hard |
292 |
nim-game |
|
π |
Easy |
293 |
flip-game |
π |
|
Easy |
294 |
flip-game-ii |
π |
|
Medium |
295 |
find-median-from-data-stream |
|
π |
Hard |
296 |
best-meeting-point |
π |
π |
Hard |
297 |
serialize-and-deserialize-binary-tree |
|
π |
Hard |
298 |
binary-tree-longest-consecutive-sequence |
π |
π |
Medium |
299 |
bulls-and-cows |
|
|
Medium |
300 |
longest-increasing-subsequence |
Cpp |
π |
Medium |
301 |
remove-invalid-parentheses |
|
π |
Hard |
302 |
smallest-rectangle-enclosing-black-pixels |
π |
π |
Hard |
303 |
range-sum-query-immutable |
|
π |
Easy |
304 |
range-sum-query-2d-immutable |
|
π |
Medium |
305 |
number-of-islands-ii |
π |
π |
Hard |
306 |
additive-number |
|
|
Medium |
307 |
range-sum-query-mutable |
|
π |
Medium |
308 |
range-sum-query-2d-mutable |
π |
|
Hard |
309 |
best-time-to-buy-and-sell-stock-with-cooldown |
|
|
Medium |
310 |
minimum-height-trees |
|
|
Medium |
311 |
sparse-matrix-multiplication |
π |
|
Medium |
312 |
burst-balloons |
|
|
Hard |
313 |
super-ugly-number |
|
|
Medium |
314 |
binary-tree-vertical-order-traversal |
π |
|
Medium |
315 |
count-of-smaller-numbers-after-self |
Cpp |
|
Hard |
316 |
remove-duplicate-letters |
|
|
Hard |
317 |
shortest-distance-from-all-buildings |
π |
|
Hard |
318 |
maximum-product-of-word-lengths |
Cpp |
|
Medium |
319 |
bulb-switcher |
|
|
Medium |
320 |
generalized-abbreviation |
π |
π |
Medium |
321 |
create-maximum-number |
|
|
Hard |
322 |
coin-change |
|
π |
Medium |
323 |
number-of-connected-components-in-an-undirected-graph |
π |
|
Medium |
324 |
wiggle-sort-ii |
|
|
Medium |
325 |
maximum-size-subarray-sum-equals-k |
π |
|
Medium |
326 |
power-of-three |
|
π |
Easy |
327 |
count-of-range-sum |
|
|
Hard |
328 |
odd-even-linked-list |
|
π |
Medium |
329 |
longest-increasing-path-in-a-matrix |
|
π |
Hard |
330 |
patching-array |
|
π |
Hard |
331 |
verify-preorder-serialization-of-a-binary-tree |
|
|
Medium |
332 |
reconstruct-itinerary |
|
|
Medium |
333 |
largest-bst-subtree |
π |
|
Medium |
334 |
increasing-triplet-subsequence |
|
|
Medium |
335 |
self-crossing |
|
|
Hard |
336 |
palindrome-pairs |
|
|
Hard |
337 |
house-robber-iii |
|
|
Medium |
338 |
counting-bits |
|
π |
Medium |
339 |
nested-list-weight-sum |
π |
π |
Easy |
340 |
longest-substring-with-at-most-k-distinct-characters |
π |
π |
Hard |
341 |
flatten-nested-list-iterator |
|
|
Medium |
342 |
power-of-four |
|
|
Easy |
343 |
integer-break |
|
|
Medium |
344 |
reverse-string |
Cpp |
|
Easy |
345 |
reverse-vowels-of-a-string |
|
|
Easy |
346 |
moving-average-from-data-stream |
π |
|
Easy |
347 |
top-k-frequent-elements |
|
π |
Medium |
348 |
design-tic-tac-toe |
π |
|
Medium |
349 |
intersection-of-two-arrays |
|
π |
Easy |
350 |
intersection-of-two-arrays-ii |
|
|
Easy |
351 |
android-unlock-patterns |
π |
π |
Medium |
352 |
data-stream-as-disjoint-intervals |
|
|
Hard |
353 |
design-snake-game |
π |
|
Medium |
354 |
russian-doll-envelopes |
|
|
Hard |
355 |
design-twitter |
|
|
Medium |
356 |
line-reflection |
π |
|
Medium |
357 |
count-numbers-with-unique-digits |
|
|
Medium |
358 |
rearrange-string-k-distance-apart |
π |
|
Hard |
359 |
logger-rate-limiter |
π |
|
Easy |
360 |
sort-transformed-array |
π |
|
Medium |
361 |
bomb-enemy |
π |
|
Medium |
362 |
design-hit-counter |
π |
|
Medium |
363 |
max-sum-of-rectangle-no-larger-than-k |
|
|
Hard |
364 |
nested-list-weight-sum-ii |
π |
|
Medium |
365 |
water-and-jug-problem |
|
|
Medium |
366 |
find-leaves-of-binary-tree |
π |
|
Medium |
367 |
valid-perfect-square |
|
|
Easy |
368 |
largest-divisible-subset |
|
|
Medium |
369 |
plus-one-linked-list |
π |
|
Medium |
370 |
range-addition |
π |
π |
Medium |
371 |
sum-of-two-integers |
|
|
Easy |
372 |
super-pow |
|
|
Medium |
373 |
find-k-pairs-with-smallest-sums |
|
|
Medium |
374 |
guess-number-higher-or-lower |
|
π |
Easy |
375 |
guess-number-higher-or-lower-ii |
|
π |
Medium |
376 |
wiggle-subsequence |
|
π |
Medium |
377 |
combination-sum-iv |
|
|
Medium |
378 |
kth-smallest-element-in-a-sorted-matrix |
|
|
Medium |
379 |
design-phone-directory |
π |
|
Medium |
380 |
insert-delete-getrandom-o1 |
Cpp |
|
Medium |
381 |
insert-delete-getrandom-o1-duplicates-allowed |
|
|
Hard |
382 |
linked-list-random-node |
|
|
Medium |
383 |
ransom-note |
|
|
Easy |
384 |
shuffle-an-array |
|
π |
Medium |
385 |
mini-parser |
|
|
Medium |
386 |
lexicographical-numbers |
|
|
Medium |
387 |
first-unique-character-in-a-string |
|
π |
Easy |
388 |
longest-absolute-file-path |
|
|
Medium |
389 |
find-the-difference |
|
|
Easy |
390 |
elimination-game |
|
|
Medium |
391 |
perfect-rectangle |
|
|
Hard |
392 |
is-subsequence |
|
|
Medium |
393 |
utf-8-validation |
|
π |
Medium |
394 |
decode-string |
|
|
Medium |
395 |
longest-substring-with-at-least-k-repeating-characters |
|
|
Medium |
396 |
rotate-function |
|
|
Medium |
397 |
integer-replacement |
|
|
Medium |
398 |
random-pick-index |
|
|
Medium |
399 |
evaluate-division |
|
|
Medium |
400 |
nth-digit |
|
|
Easy |
401 |
binary-watch |
|
|
Easy |
402 |
remove-k-digits |
|
|
Medium |
403 |
frog-jump |
|
π |
Hard |
404 |
sum-of-left-leaves |
|
|
Easy |
405 |
convert-a-number-to-hexadecimal |
|
|
Easy |
406 |
queue-reconstruction-by-height |
|
|
Medium |
407 |
trapping-rain-water-ii |
|
|
Hard |
408 |
valid-word-abbreviation |
π |
|
Easy |
409 |
longest-palindrome |
|
π |
Easy |
410 |
split-array-largest-sum |
|
π |
Hard |
411 |
minimum-unique-word-abbreviation |
π |
|
Hard |
412 |
fizz-buzz |
|
π |
Easy |
413 |
arithmetic-slices |
|
π |
Medium |
414 |
third-maximum-number |
|
|
Easy |
415 |
add-strings |
|
|
Easy |
416 |
partition-equal-subset-sum |
|
|
Medium |
417 |
pacific-atlantic-water-flow |
|
|
Medium |
418 |
sentence-screen-fitting |
π |
|
Medium |
419 |
battleships-in-a-board |
|
|
Medium |
420 |
strong-password-checker |
|
|
Hard |
421 |
maximum-xor-of-two-numbers-in-an-array |
|
|
Medium |
422 |
valid-word-square |
π |
|
Easy |
423 |
reconstruct-original-digits-from-english |
|
π |
Medium |
424 |
longest-repeating-character-replacement |
|
|
Medium |
425 |
word-squares |
π |
|
Hard |
432 |
all-oone-data-structure |
|
|
Hard |
433 |
minimum-genetic-mutation |
|
|
Medium |
434 |
number-of-segments-in-a-string |
|
π |
Easy |
435 |
non-overlapping-intervals |
|
π |
Medium |
436 |
find-right-interval |
|
π |
Medium |
437 |
path-sum-iii |
|
|
Easy |
438 |
find-all-anagrams-in-a-string |
|
|
Easy |
439 |
ternary-expression-parser |
π |
|
Medium |
440 |
k-th-smallest-in-lexicographical-order |
|
|
Hard |
441 |
arranging-coins |
|
|
Easy |
442 |
find-all-duplicates-in-an-array |
Cpp |
|
Medium |
443 |
string-compression |
|
π |
Easy |
444 |
sequence-reconstruction |
π |
|
Medium |
445 |
add-two-numbers-ii |
|
|
Medium |
446 |
arithmetic-slices-ii-subsequence |
|
π |
Hard |
447 |
number-of-boomerangs |
|
|
Easy |
448 |
find-all-numbers-disappeared-in-an-array |
Cpp |
|
Easy |
449 |
serialize-and-deserialize-bst |
|
π |
Medium |
450 |
delete-node-in-a-bst |
|
π |
Medium |
451 |
sort-characters-by-frequency |
|
|
Medium |
452 |
minimum-number-of-arrows-to-burst-balloons |
|
π |
Medium |
453 |
minimum-moves-to-equal-array-elements |
|
π |
Easy |
454 |
4sum-ii |
|
|
Medium |
455 |
assign-cookies |
|
|
Easy |
456 |
132-pattern |
|
π |
Medium |
457 |
circular-array-loop |
|
|
Medium |
458 |
poor-pigs |
|
π |
Hard |
459 |
repeated-substring-pattern |
|
|
Easy |
460 |
lfu-cache |
|
|
Hard |
461 |
hamming-distance |
|
|
Easy |
462 |
minimum-moves-to-equal-array-elements-ii |
|
π |
Medium |
463 |
island-perimeter |
|
|
Easy |
464 |
can-i-win |
|
|
Medium |
465 |
optimal-account-balancing |
π |
|
Hard |
466 |
count-the-repetitions |
|
π |
Hard |
467 |
unique-substrings-in-wraparound-string |
|
|
Medium |
468 |
validate-ip-address |
|
|
Medium |
469 |
convex-polygon |
π |
|
Medium |
471 |
encode-string-with-shortest-length |
π |
|
Hard |
472 |
concatenated-words |
|
|
Hard |
473 |
matchsticks-to-square |
|
π |
Medium |
474 |
ones-and-zeroes |
|
π |
Medium |
475 |
heaters |
|
|
Easy |
476 |
number-complement |
|
|
Easy |
477 |
total-hamming-distance |
|
π |
Medium |
479 |
largest-palindrome-product |
|
|
Hard |
480 |
sliding-window-median |
|
π |
Hard |
481 |
magical-string |
|
|
Medium |
482 |
license-key-formatting |
|
|
Easy |
483 |
smallest-good-base |
|
|
Hard |
484 |
find-permutation |
π |
π |
Medium |
485 |
max-consecutive-ones |
|
|
Easy |
486 |
predict-the-winner |
|
π |
Medium |
487 |
max-consecutive-ones-ii |
π |
|
Medium |
488 |
zuma-game |
|
|
Hard |
490 |
the-maze |
π |
π |
Medium |
491 |
increasing-subsequences |
|
|
Medium |
492 |
construct-the-rectangle |
|
|
Easy |
493 |
reverse-pairs |
Cpp |
π |
Hard |
494 |
target-sum |
|
π |
Medium |
495 |
teemo-attacking |
|
|
Medium |
496 |
next-greater-element-i |
|
π |
Easy |
498 |
diagonal-traverse |
|
|
Medium |
499 |
the-maze-iii |
π |
|
Hard |
500 |
keyboard-row |
|
|
Easy |
501 |
find-mode-in-binary-search-tree |
|
|
Easy |
502 |
ipo |
|
|
Hard |
503 |
next-greater-element-ii |
|
π |
Medium |
504 |
base-7 |
|
|
Easy |
505 |
the-maze-ii |
π |
π |
Medium |
506 |
relative-ranks |
|
|
Easy |
507 |
perfect-number |
|
π |
Easy |
508 |
most-frequent-subtree-sum |
|
|
Medium |
509 |
inorder-successor-in-bst-ii |
π |
π |
Medium |
511 |
all-paths-from-source-lead-to-destination |
π |
|
Medium |
513 |
find-bottom-left-tree-value |
|
|
Medium |
514 |
freedom-trail |
|
|
Hard |
515 |
find-largest-value-in-each-tree-row |
|
|
Medium |
516 |
longest-palindromic-subsequence |
|
|
Medium |
517 |
super-washing-machines |
|
π |
Hard |
518 |
coin-change-2 |
|
|
Medium |
520 |
detect-capital |
|
|
Easy |
521 |
longest-uncommon-subsequence-i |
|
π |
Easy |
522 |
longest-uncommon-subsequence-ii |
|
π |
Medium |
523 |
continuous-subarray-sum |
|
π |
Medium |
524 |
longest-word-in-dictionary-through-deleting |
|
π |
Medium |
525 |
contiguous-array |
|
π |
Medium |
526 |
beautiful-arrangement |
|
π |
Medium |
527 |
word-abbreviation |
π |
π |
Hard |
529 |
minesweeper |
|
|
Medium |
530 |
minimum-absolute-difference-in-bst |
|
|
Easy |
531 |
lonely-pixel-i |
π |
|
Medium |
532 |
k-diff-pairs-in-an-array |
|
|
Easy |
533 |
lonely-pixel-ii |
π |
|
Medium |
535 |
encode-and-decode-tinyurl |
|
π |
Medium |
536 |
construct-binary-tree-from-string |
π |
|
Medium |
537 |
complex-number-multiplication |
|
π |
Medium |
538 |
convert-bst-to-greater-tree |
|
π |
Easy |
539 |
minimum-time-difference |
|
|
Medium |
540 |
single-element-in-a-sorted-array |
|
|
Medium |
541 |
reverse-string-ii |
|
π |
Easy |
542 |
01-matrix |
|
π |
Medium |
543 |
diameter-of-binary-tree |
|
π |
Easy |
544 |
output-contest-matches |
π |
π |
Medium |
545 |
boundary-of-binary-tree |
π |
π |
Medium |
546 |
remove-boxes |
|
π |
Hard |
547 |
friend-circles |
Cpp |
π |
Medium |
548 |
split-array-with-equal-sum |
π |
π |
Medium |
549 |
binary-tree-longest-consecutive-sequence-ii |
π |
π |
Medium |
551 |
student-attendance-record-i |
|
π |
Easy |
552 |
student-attendance-record-ii |
|
π |
Hard |
553 |
optimal-division |
|
π |
Medium |
554 |
brick-wall |
|
π |
Medium |
555 |
split-concatenated-strings |
π |
π |
Medium |
556 |
next-greater-element-iii |
|
π |
Medium |
557 |
reverse-words-in-a-string-iii |
|
π |
Easy |
560 |
subarray-sum-equals-k |
|
π |
Medium |
561 |
array-partition-i |
|
π |
Easy |
562 |
longest-line-of-consecutive-one-in-matrix |
π |
π |
Medium |
563 |
binary-tree-tilt |
|
π |
Easy |
564 |
find-the-closest-palindrome |
|
π |
Hard |
565 |
array-nesting |
|
π |
Medium |
566 |
reshape-the-matrix |
|
π |
Easy |
567 |
permutation-in-string |
|
π |
Medium |
568 |
maximum-vacation-days |
π |
π |
Hard |
572 |
subtree-of-another-tree |
|
π |
Easy |
573 |
squirrel-simulation |
π |
π |
Medium |
575 |
distribute-candies |
|
π |
Easy |
576 |
out-of-boundary-paths |
|
π |
Medium |
581 |
shortest-unsorted-continuous-subarray |
|
π |
Easy |
582 |
kill-process |
π |
π |
Medium |
583 |
delete-operation-for-two-strings |
|
π |
Medium |
587 |
erect-the-fence |
|
π |
Hard |
588 |
design-in-memory-file-system |
π |
π |
Hard |
591 |
tag-validator |
|
π |
Hard |
592 |
fraction-addition-and-subtraction |
|
π |
Medium |
593 |
valid-square |
|
π |
Medium |
594 |
longest-harmonious-subsequence |
|
π |
Easy |
598 |
range-addition-ii |
|
π |
Easy |
599 |
minimum-index-sum-of-two-lists |
|
π |
Easy |
600 |
non-negative-integers-without-consecutive-ones |
|
π |
Hard |
604 |
design-compressed-string-iterator |
π |
π |
Easy |
605 |
can-place-flowers |
|
π |
Easy |
606 |
construct-string-from-binary-tree |
|
π |
Easy |
609 |
find-duplicate-file-in-system |
|
π |
Medium |
611 |
valid-triangle-number |
|
π |
Medium |
616 |
add-bold-tag-in-string |
π |
π |
Medium |
617 |
merge-two-binary-trees |
|
π |
Easy |
621 |
task-scheduler |
|
π |
Medium |
623 |
add-one-row-to-tree |
|
π |
Medium |
624 |
maximum-distance-in-arrays |
π |
π |
Easy |
625 |
minimum-factorization |
π |
π |
Medium |
628 |
maximum-product-of-three-numbers |
|
π |
Easy |
629 |
k-inverse-pairs-array |
|
π |
Hard |
630 |
course-schedule-iii |
|
π |
Hard |
631 |
design-excel-sum-formula |
π |
π |
Hard |
632 |
smallest-range |
|
π |
Hard |
633 |
sum-of-square-numbers |
|
π |
Easy |
634 |
find-the-derangement-of-an-array |
π |
π |
Medium |
635 |
design-log-storage-system |
π |
π |
Medium |
636 |
exclusive-time-of-functions |
|
π |
Medium |
637 |
average-of-levels-in-binary-tree |
|
π |
Easy |
638 |
shopping-offers |
|
π |
Medium |
639 |
decode-ways-ii |
|
π |
Hard |
640 |
solve-the-equation |
|
π |
Medium |
642 |
design-search-autocomplete-system |
π |
π |
Hard |
643 |
maximum-average-subarray-i |
|
π |
Easy |
644 |
maximum-average-subarray-ii |
π |
π |
Hard |
645 |
set-mismatch |
|
π |
Easy |
646 |
maximum-length-of-pair-chain |
|
π |
Medium |
647 |
palindromic-substrings |
|
π |
Medium |
648 |
replace-words |
|
π |
Medium |
649 |
dota2-senate |
|
π |
Medium |
650 |
2-keys-keyboard |
|
π |
Medium |
651 |
4-keys-keyboard |
π |
π |
Medium |
652 |
find-duplicate-subtrees |
|
π |
Medium |
653 |
two-sum-iv-input-is-a-bst |
|
π |
Easy |
654 |
maximum-binary-tree |
|
π |
Medium |
655 |
print-binary-tree |
|
π |
Medium |
656 |
coin-path |
π |
π |
Hard |
657 |
robot-return-to-origin |
|
π |
Easy |
658 |
find-k-closest-elements |
|
π |
Medium |
659 |
split-array-into-consecutive-subsequences |
|
π |
Medium |
660 |
remove-9 |
π |
π |
Hard |
661 |
image-smoother |
|
π |
Easy |
662 |
maximum-width-of-binary-tree |
|
π |
Medium |
663 |
equal-tree-partition |
π |
π |
Medium |
664 |
strange-printer |
|
π |
Hard |
665 |
non-decreasing-array |
|
π |
Easy |
666 |
path-sum-iv |
π |
π |
Medium |
667 |
beautiful-arrangement-ii |
|
π |
Medium |
668 |
kth-smallest-number-in-multiplication-table |
|
π |
Hard |
669 |
trim-a-binary-search-tree |
|
π |
Easy |
670 |
maximum-swap |
|
π |
Medium |
671 |
second-minimum-node-in-a-binary-tree |
|
π |
Easy |
672 |
bulb-switcher-ii |
|
π |
Medium |
673 |
number-of-longest-increasing-subsequence |
|
π |
Medium |
674 |
longest-continuous-increasing-subsequence |
|
π |
Easy |
675 |
cut-off-trees-for-golf-event |
|
π |
Hard |
676 |
implement-magic-dictionary |
|
π |
Medium |
677 |
map-sum-pairs |
|
π |
Medium |
678 |
valid-parenthesis-string |
|
π |
Medium |
679 |
24-game |
|
π |
Hard |
680 |
valid-palindrome-ii |
|
π |
Easy |
681 |
next-closest-time |
π |
π |
Medium |
682 |
baseball-game |
|
π |
Easy |
683 |
k-empty-slots |
π |
π |
Hard |
684 |
redundant-connection |
|
π |
Medium |
685 |
redundant-connection-ii |
|
π |
Hard |
686 |
repeated-string-match |
|
π |
Easy |
687 |
longest-univalue-path |
|
π |
Easy |
688 |
knight-probability-in-chessboard |
|
π |
Medium |
689 |
maximum-sum-of-3-non-overlapping-subarrays |
|
π |
Hard |
690 |
employee-importance |
|
π |
Easy |
691 |
stickers-to-spell-word |
|
π |
Hard |
692 |
top-k-frequent-words |
|
π |
Medium |
693 |
binary-number-with-alternating-bits |
|
π |
Easy |
694 |
number-of-distinct-islands |
π |
π |
Medium |
695 |
max-area-of-island |
|
π |
Medium |
696 |
count-binary-substrings |
|
π |
Easy |
697 |
degree-of-an-array |
|
π |
Easy |
698 |
partition-to-k-equal-sum-subsets |
|
π |
Medium |
699 |
falling-squares |
|
π |
Hard |
711 |
number-of-distinct-islands-ii |
π |
π |
Hard |
712 |
minimum-ascii-delete-sum-for-two-strings |
|
π |
Medium |
713 |
subarray-product-less-than-k |
|
π |
Medium |
714 |
best-time-to-buy-and-sell-stock-with-transaction-fee |
|
π |
Medium |
715 |
range-module |
|
π |
Hard |
716 |
max-stack |
π |
π |
Easy |
717 |
1-bit-and-2-bit-characters |
|
π |
Easy |
718 |
maximum-length-of-repeated-subarray |
|
π |
Medium |
719 |
find-k-th-smallest-pair-distance |
|
π |
Hard |
720 |
longest-word-in-dictionary |
|
π |
Easy |
721 |
accounts-merge |
|
π |
Medium |
722 |
remove-comments |
|
π |
Medium |
723 |
candy-crush |
π |
π |
Medium |
724 |
find-pivot-index |
|
π |
Easy |
725 |
split-linked-list-in-parts |
|
π |
Medium |
726 |
number-of-atoms |
|
π |
Hard |
727 |
minimum-window-subsequence |
π |
π |
Hard |
728 |
self-dividing-numbers |
|
π |
Easy |
729 |
my-calendar-i |
|
π |
Medium |
730 |
count-different-palindromic-subsequences |
|
π |
Hard |
731 |
my-calendar-ii |
|
π |
Medium |
732 |
my-calendar-iii |
|
π |
Hard |
733 |
flood-fill |
|
π |
Easy |
734 |
sentence-similarity |
π |
π |
Easy |
735 |
asteroid-collision |
|
π |
Medium |
736 |
parse-lisp-expression |
|
π |
Hard |
737 |
sentence-similarity-ii |
π |
π |
Medium |
738 |
monotone-increasing-digits |
|
π |
Medium |
739 |
daily-temperatures |
|
π |
Medium |
740 |
delete-and-earn |
|
π |
Medium |
741 |
cherry-pickup |
|
π |
Hard |
742 |
to-lower-case |
|
|
Easy |
743 |
closest-leaf-in-a-binary-tree |
π |
π |
Medium |
744 |
network-delay-time |
|
π |
Medium |
745 |
find-smallest-letter-greater-than-target |
Cpp |
π |
Easy |
746 |
prefix-and-suffix-search |
|
π |
Hard |
747 |
min-cost-climbing-stairs |
|
π |
Easy |
748 |
largest-number-at-least-twice-of-others |
|
π |
Easy |
749 |
shortest-completing-word |
|
π |
Easy |
750 |
contain-virus |
|
π |
Hard |
751 |
number-of-corner-rectangles |
π |
π |
Medium |
752 |
ip-to-cidr |
π |
π |
Easy |
753 |
open-the-lock |
|
π |
Medium |
754 |
cracking-the-safe |
|
π |
Hard |
755 |
reach-a-number |
|
π |
Easy |
756 |
pour-water |
π |
π |
Medium |
757 |
pyramid-transition-matrix |
|
π |
Medium |
758 |
convert-binary-search-tree-to-sorted-doubly-linked-list |
π |
π |
Medium |
759 |
set-intersection-size-at-least-two |
|
π |
Hard |
760 |
bold-words-in-string |
π |
π |
Easy |
761 |
employee-free-time |
π |
π |
Hard |
762 |
find-anagram-mappings |
π |
π |
Easy |
763 |
special-binary-string |
|
π |
Hard |
764 |
n-ary-tree-level-order-traversal |
|
|
Easy |
765 |
serialize-and-deserialize-n-ary-tree |
π |
|
Hard |
766 |
flatten-a-multilevel-doubly-linked-list |
|
|
Medium |
767 |
prime-number-of-set-bits-in-binary-representation |
|
π |
Easy |
768 |
partition-labels |
|
π |
Medium |
769 |
largest-plus-sign |
|
π |
Medium |
770 |
couples-holding-hands |
|
π |
Hard |
771 |
encode-n-ary-tree-to-binary-tree |
π |
|
Hard |
772 |
construct-quad-tree |
|
|
Easy |
773 |
quad-tree-intersection |
|
|
Easy |
774 |
maximum-depth-of-n-ary-tree |
|
π |
Easy |
775 |
n-ary-tree-preorder-traversal |
|
π |
Easy |
776 |
n-ary-tree-postorder-traversal |
|
π |
Easy |
777 |
toeplitz-matrix |
|
π |
Easy |
778 |
reorganize-string |
|
π |
Medium |
779 |
max-chunks-to-make-sorted-ii |
|
π |
Hard |
780 |
max-chunks-to-make-sorted |
|
π |
Medium |
781 |
basic-calculator-iv |
|
π |
Hard |
782 |
jewels-and-stones |
|
π |
Easy |
783 |
search-in-a-binary-search-tree |
|
|
Easy |
784 |
insert-into-a-binary-search-tree |
|
π |
Medium |
785 |
basic-calculator-iii |
π |
|
Hard |
786 |
search-in-a-sorted-array-of-unknown-size |
π |
|
Medium |
787 |
sliding-puzzle |
|
π |
Hard |
788 |
minimize-max-distance-to-gas-station |
π |
π |
Hard |
789 |
kth-largest-element-in-a-stream |
|
|
Easy |
790 |
global-and-local-inversions |
|
π |
Medium |
791 |
split-bst |
π |
π |
Medium |
792 |
binary-search |
|
π |
Easy |
793 |
swap-adjacent-in-lr-string |
|
π |
Medium |
794 |
swim-in-rising-water |
|
π |
Hard |
795 |
k-th-symbol-in-grammar |
|
π |
Medium |
796 |
reaching-points |
|
π |
Hard |
797 |
rabbits-in-forest |
|
π |
Medium |
798 |
transform-to-chessboard |
|
π |
Hard |
799 |
minimum-distance-between-bst-nodes |
|
π |
Easy |
800 |
letter-case-permutation |
|
π |
Easy |
801 |
is-graph-bipartite |
|
π |
Medium |
802 |
k-th-smallest-prime-fraction |
|
π |
Hard |
803 |
cheapest-flights-within-k-stops |
|
π |
Medium |
804 |
rotated-digits |
|
π |
Easy |
805 |
escape-the-ghosts |
|
π |
Medium |
806 |
domino-and-tromino-tiling |
|
π |
Medium |
807 |
custom-sort-string |
|
π |
Medium |
808 |
number-of-matching-subsequences |
|
π |
Medium |
809 |
preimage-size-of-factorial-zeroes-function |
|
π |
Hard |
810 |
valid-tic-tac-toe-state |
|
π |
Medium |
811 |
number-of-subarrays-with-bounded-maximum |
|
π |
Medium |
812 |
rotate-string |
|
π |
Easy |
813 |
all-paths-from-source-to-target |
|
π |
Medium |
814 |
smallest-rotation-with-highest-score |
|
π |
Hard |
815 |
champagne-tower |
|
π |
Medium |
816 |
design-hashset |
|
|
Easy |
817 |
design-hashmap |
|
|
Easy |
818 |
similar-rgb-color |
π |
π |
Easy |
819 |
minimum-swaps-to-make-sequences-increasing |
|
π |
Medium |
820 |
find-eventual-safe-states |
|
π |
Medium |
821 |
bricks-falling-when-hit |
|
π |
Hard |
822 |
unique-morse-code-words |
|
π |
Easy |
823 |
split-array-with-same-average |
|
π |
Hard |
824 |
number-of-lines-to-write-string |
|
π |
Easy |
825 |
max-increase-to-keep-city-skyline |
|
π |
Medium |
826 |
soup-servings |
|
π |
Medium |
827 |
expressive-words |
|
π |
Medium |
828 |
chalkboard-xor-game |
|
π |
Hard |
829 |
subdomain-visit-count |
|
π |
Easy |
830 |
largest-triangle-area |
|
π |
Easy |
831 |
largest-sum-of-averages |
|
π |
Medium |
832 |
binary-tree-pruning |
|
π |
Medium |
833 |
bus-routes |
|
π |
Hard |
834 |
ambiguous-coordinates |
|
π |
Medium |
835 |
linked-list-components |
|
π |
Medium |
836 |
race-car |
|
π |
Hard |
837 |
most-common-word |
|
π |
Easy |
838 |
design-linked-list |
|
|
Easy |
839 |
short-encoding-of-words |
|
π |
Medium |
841 |
shortest-distance-to-a-character |
|
π |
Easy |
842 |
card-flipping-game |
|
π |
Medium |
843 |
binary-trees-with-factors |
|
π |
Medium |
850 |
insert-into-a-cyclic-sorted-list |
π |
|
Medium |
851 |
goat-latin |
|
π |
Easy |
852 |
friends-of-appropriate-ages |
|
π |
Medium |
853 |
most-profit-assigning-work |
|
π |
Medium |
854 |
making-a-large-island |
|
π |
Hard |
855 |
unique-letter-string |
|
π |
Hard |
856 |
consecutive-numbers-sum |
|
π |
Hard |
857 |
positions-of-large-groups |
|
π |
Easy |
858 |
masking-personal-information |
|
π |
Medium |
859 |
design-circular-deque |
|
|
Medium |
860 |
design-circular-queue |
|
|
Medium |
861 |
flipping-an-image |
|
π |
Easy |
862 |
find-and-replace-in-string |
|
π |
Medium |
863 |
sum-of-distances-in-tree |
|
π |
Hard |
864 |
image-overlap |
|
π |
Medium |
865 |
robot-room-cleaner |
π |
π |
Hard |
866 |
rectangle-overlap |
|
π |
Easy |
867 |
new-21-game |
|
π |
Medium |
868 |
push-dominoes |
|
π |
Medium |
869 |
similar-string-groups |
|
π |
Hard |
870 |
magic-squares-in-grid |
|
π |
Easy |
871 |
keys-and-rooms |
|
π |
Medium |
872 |
split-array-into-fibonacci-sequence |
|
π |
Medium |
873 |
guess-the-word |
|
π |
Hard |
874 |
backspace-string-compare |
|
π |
Easy |
875 |
longest-mountain-in-array |
|
π |
Medium |
876 |
hand-of-straights |
|
π |
Medium |
877 |
shortest-path-visiting-all-nodes |
|
π |
Hard |
878 |
shifting-letters |
|
π |
Medium |
879 |
maximize-distance-to-closest-person |
|
π |
Easy |
880 |
rectangle-area-ii |
|
π |
Hard |
881 |
loud-and-rich |
|
π |
Medium |
882 |
peak-index-in-a-mountain-array |
|
π |
Easy |
883 |
car-fleet |
|
π |
Medium |
884 |
k-similar-strings |
|
π |
Hard |
885 |
exam-room |
|
π |
Medium |
886 |
score-of-parentheses |
|
π |
Medium |
887 |
minimum-cost-to-hire-k-workers |
|
π |
Hard |
888 |
mirror-reflection |
|
π |
Medium |
889 |
buddy-strings |
|
π |
Easy |
890 |
lemonade-change |
|
π |
Easy |
891 |
score-after-flipping-matrix |
|
π |
Medium |
892 |
shortest-subarray-with-sum-at-least-k |
|
π |
Hard |
893 |
all-nodes-distance-k-in-binary-tree |
|
π |
Medium |
894 |
random-pick-with-blacklist |
|
π |
Hard |
895 |
shortest-path-to-get-all-keys |
|
π |
Hard |
896 |
smallest-subtree-with-all-the-deepest-nodes |
|
π |
Medium |
897 |
prime-palindrome |
|
π |
Medium |
898 |
transpose-matrix |
Cpp |
π |
Easy |
899 |
binary-gap |
|
π |
Easy |
900 |
reordered-power-of-2 |
|
π |
Medium |
901 |
advantage-shuffle |
|
π |
Medium |
902 |
minimum-number-of-refueling-stops |
|
π |
Hard |
903 |
implement-rand10-using-rand7 |
|
π |
Medium |
904 |
leaf-similar-trees |
|
π |
Easy |
905 |
length-of-longest-fibonacci-subsequence |
|
π |
Medium |
906 |
walking-robot-simulation |
|
π |
Easy |
907 |
koko-eating-bananas |
|
π |
Medium |
908 |
middle-of-the-linked-list |
|
π |
Easy |
909 |
stone-game |
|
π |
Medium |
910 |
nth-magical-number |
|
π |
Hard |
911 |
profitable-schemes |
|
π |
Hard |
912 |
random-pick-with-weight |
|
π |
Medium |
913 |
random-flip-matrix |
|
π |
Medium |
914 |
random-point-in-non-overlapping-rectangles |
|
π |
Medium |
915 |
generate-random-point-in-a-circle |
|
π |
Medium |
916 |
decoded-string-at-index |
|
π |
Medium |
917 |
boats-to-save-people |
|
π |
Medium |
918 |
reachable-nodes-in-subdivided-graph |
|
π |
Hard |
919 |
projection-area-of-3d-shapes |
|
π |
Easy |
920 |
uncommon-words-from-two-sentences |
|
π |
Easy |
921 |
spiral-matrix-iii |
|
π |
Medium |
922 |
possible-bipartition |
|
π |
Medium |
923 |
super-egg-drop |
|
π |
Hard |
924 |
fair-candy-swap |
|
π |
Easy |
925 |
construct-binary-tree-from-preorder-and-postorder-traversal |
|
π |
Medium |
926 |
find-and-replace-pattern |
|
π |
Medium |
927 |
sum-of-subsequence-widths |
|
π |
Hard |
928 |
surface-area-of-3d-shapes |
|
π |
Easy |
929 |
groups-of-special-equivalent-strings |
|
π |
Easy |
930 |
all-possible-full-binary-trees |
|
π |
Medium |
931 |
maximum-frequency-stack |
|
π |
Hard |
932 |
monotonic-array |
|
π |
Easy |
933 |
increasing-order-search-tree |
|
π |
Easy |
934 |
bitwise-ors-of-subarrays |
|
π |
Medium |
935 |
orderly-queue |
|
π |
Hard |
936 |
rle-iterator |
|
π |
Medium |
937 |
online-stock-span |
|
π |
Medium |
938 |
numbers-at-most-n-given-digit-set |
|
π |
Hard |
939 |
valid-permutations-for-di-sequence |
|
π |
Hard |
940 |
fruit-into-baskets |
|
π |
Medium |
941 |
sort-array-by-parity |
|
π |
Easy |
942 |
super-palindromes |
|
π |
Hard |
943 |
sum-of-subarray-minimums |
|
π |
Medium |
944 |
smallest-range-i |
|
π |
Easy |
945 |
snakes-and-ladders |
|
π |
Medium |
946 |
smallest-range-ii |
|
π |
Medium |
947 |
online-election |
|
π |
Medium |
948 |
sort-an-array |
|
|
Medium |
949 |
cat-and-mouse |
|
π |
Hard |
950 |
x-of-a-kind-in-a-deck-of-cards |
|
π |
Easy |
951 |
partition-array-into-disjoint-intervals |
|
π |
Medium |
952 |
word-subsets |
|
π |
Medium |
953 |
reverse-only-letters |
|
π |
Easy |
954 |
maximum-sum-circular-subarray |
|
π |
Medium |
955 |
complete-binary-tree-inserter |
|
π |
Medium |
956 |
number-of-music-playlists |
|
π |
Hard |
957 |
minimum-add-to-make-parentheses-valid |
|
π |
Medium |
958 |
sort-array-by-parity-ii |
|
π |
Easy |
959 |
3sum-with-multiplicity |
|
π |
Medium |
960 |
minimize-malware-spread |
|
π |
Hard |
961 |
long-pressed-name |
|
π |
Easy |
962 |
flip-string-to-monotone-increasing |
|
π |
Medium |
963 |
three-equal-parts |
|
π |
Hard |
964 |
minimize-malware-spread-ii |
|
π |
Hard |
965 |
unique-email-addresses |
|
π |
Easy |
966 |
binary-subarrays-with-sum |
|
π |
Medium |
967 |
minimum-falling-path-sum |
|
π |
Medium |
968 |
beautiful-array |
|
π |
Medium |
969 |
number-of-recent-calls |
|
π |
Easy |
971 |
shortest-bridge |
|
π |
Medium |
972 |
knight-dialer |
|
π |
Medium |
973 |
stamping-the-sequence |
|
π |
Hard |
974 |
reorder-log-files |
|
π |
Easy |
975 |
range-sum-of-bst |
|
π |
Easy |
976 |
minimum-area-rectangle |
|
π |
Medium |
977 |
distinct-subsequences-ii |
|
π |
Hard |
978 |
valid-mountain-array |
|
π |
Easy |
979 |
di-string-match |
|
π |
Easy |
980 |
find-the-shortest-superstring |
|
π |
Hard |
981 |
delete-columns-to-make-sorted |
|
π |
Easy |
982 |
minimum-increment-to-make-array-unique |
|
π |
Medium |
983 |
validate-stack-sequences |
|
π |
Medium |
984 |
most-stones-removed-with-same-row-or-column |
|
π |
Medium |
985 |
bag-of-tokens |
|
π |
Medium |
986 |
largest-time-for-given-digits |
|
π |
Easy |
987 |
reveal-cards-in-increasing-order |
|
π |
Medium |
988 |
flip-equivalent-binary-trees |
|
π |
Medium |
989 |
largest-component-size-by-common-factor |
|
π |
Hard |
990 |
verifying-an-alien-dictionary |
|
π |
Easy |
991 |
array-of-doubled-pairs |
|
π |
Medium |
992 |
delete-columns-to-make-sorted-ii |
|
π |
Medium |
993 |
tallest-billboard |
|
π |
Hard |
994 |
prison-cells-after-n-days |
|
π |
Medium |
998 |
check-completeness-of-a-binary-tree |
|
π |
Medium |
999 |
regions-cut-by-slashes |
|
π |
Medium |
1000 |
delete-columns-to-make-sorted-iii |
|
π |
Hard |
1001 |
n-repeated-element-in-size-2n-array |
|
π |
Easy |
1002 |
maximum-width-ramp |
|
π |
Medium |
1003 |
minimum-area-rectangle-ii |
|
π |
Medium |
1004 |
least-operators-to-express-number |
|
π |
Hard |
1005 |
univalued-binary-tree |
|
π |
Easy |
1006 |
vowel-spellchecker |
|
π |
Medium |
1007 |
numbers-with-same-consecutive-differences |
|
π |
Medium |
1008 |
binary-tree-cameras |
|
π |
Hard |
1009 |
pancake-sorting |
|
π |
Medium |
1010 |
powerful-integers |
|
π |
Easy |
1011 |
flip-binary-tree-to-match-preorder-traversal |
|
π |
Medium |
1012 |
equal-rational-numbers |
|
π |
Hard |
1013 |
fibonacci-number |
|
|
Easy |
1014 |
k-closest-points-to-origin |
|
π |
Medium |
1016 |
subarray-sums-divisible-by-k |
|
π |
Medium |
1017 |
odd-even-jump |
|
π |
Hard |
1018 |
largest-perimeter-triangle |
|
π |
Easy |
1019 |
squares-of-a-sorted-array |
|
π |
Easy |
1020 |
longest-turbulent-subarray |
|
π |
Medium |
1021 |
distribute-coins-in-binary-tree |
|
π |
Medium |
1022 |
unique-paths-iii |
|
π |
Hard |
1023 |
time-based-key-value-store |
|
π |
Medium |
1024 |
triples-with-bitwise-and-equal-to-zero |
|
|
Hard |
1025 |
minimum-cost-for-tickets |
|
π |
Medium |
1026 |
string-without-aaa-or-bbb |
|
π |
Medium |
1027 |
sum-of-even-numbers-after-queries |
|
π |
Easy |
1028 |
interval-list-intersections |
|
π |
Medium |
1029 |
vertical-order-traversal-of-a-binary-tree |
|
π |
Medium |
1030 |
smallest-string-starting-from-leaf |
|
π |
Medium |
1031 |
add-to-array-form-of-integer |
|
π |
Easy |
1032 |
satisfiability-of-equality-equations |
|
π |
Medium |
1033 |
broken-calculator |
|
π |
Medium |
1034 |
subarrays-with-k-different-integers |
|
π |
Hard |
1035 |
cousins-in-binary-tree |
|
π |
Easy |
1036 |
rotting-oranges |
|
π |
Easy |
1037 |
minimum-number-of-k-consecutive-bit-flips |
|
π |
Hard |
1038 |
number-of-squareful-arrays |
|
π |
Hard |
1039 |
find-the-town-judge |
|
|
Easy |
1040 |
maximum-binary-tree-ii |
|
|
Medium |
1041 |
available-captures-for-rook |
|
|
Easy |
1042 |
minimum-cost-to-merge-stones |
|
|
Hard |
1043 |
grid-illumination |
|
|
Hard |
1044 |
find-common-characters |
|
|
Easy |
1045 |
check-if-word-is-valid-after-substitutions |
|
|
Medium |
1046 |
max-consecutive-ones-iii |
|
|
Medium |
1047 |
maximize-sum-of-array-after-k-negations |
|
|
Easy |
1048 |
clumsy-factorial |
|
|
Medium |
1049 |
minimum-domino-rotations-for-equal-row |
|
π |
Medium |
1050 |
construct-binary-search-tree-from-preorder-traversal |
|
π |
Medium |
1051 |
shortest-way-to-form-string |
π |
|
Medium |
1052 |
campus-bikes |
π |
|
Medium |
1053 |
minimize-rounding-error-to-meet-target |
π |
|
Medium |
1054 |
complement-of-base-10-integer |
|
|
Easy |
1055 |
pairs-of-songs-with-total-durations-divisible-by-60 |
|
|
Easy |
1056 |
capacity-to-ship-packages-within-d-days |
|
|
Medium |
1057 |
numbers-with-repeated-digits |
|
|
Hard |
1058 |
lexicographically-smallest-equivalent-string |
π |
|
Medium |
1059 |
missing-element-in-sorted-array |
π |
|
Medium |
1060 |
longest-repeating-substring |
π |
|
Medium |
1061 |
number-of-valid-subarrays |
π |
|
Hard |
1062 |
partition-array-into-three-parts-with-equal-sum |
|
|
Easy |
1063 |
best-sightseeing-pair |
|
|
Medium |
1064 |
smallest-integer-divisible-by-k |
|
|
Medium |
1065 |
binary-string-with-substrings-representing-1-to-n |
|
|
Medium |
1066 |
fixed-point |
π |
|
Easy |
1067 |
campus-bikes-ii |
π |
|
Medium |
1068 |
digit-count-in-range |
π |
|
Hard |
1069 |
confusing-number |
π |
|
Easy |
1070 |
convert-to-base-2 |
|
|
Medium |
1071 |
binary-prefix-divisible-by-5 |
|
|
Easy |
1072 |
next-greater-node-in-linked-list |
|
|
Medium |
1073 |
number-of-enclaves |
|
|
Medium |
1075 |
index-pairs-of-a-string |
π |
|
Easy |
1078 |
remove-outermost-parentheses |
|
|
Easy |
1079 |
sum-of-root-to-leaf-binary-numbers |
|
|
Easy |
1080 |
camelcase-matching |
|
|
Medium |
1081 |
video-stitching |
|
|
Medium |
1086 |
divisor-game |
|
|
Easy |
1087 |
longest-arithmetic-sequence |
|
|
Medium |
1092 |
maximum-difference-between-node-and-ancestor |
|
|
Medium |
1093 |
recover-a-tree-from-preorder-traversal |
|
|
Hard |
1094 |
matrix-cells-in-distance-order |
|
|
Easy |
1095 |
two-city-scheduling |
|
π |
Easy |
1096 |
maximum-sum-of-two-non-overlapping-subarrays |
|
|
Medium |
1097 |
stream-of-characters |
|
|
Hard |
1103 |
moving-stones-until-consecutive |
|
|
Easy |
1104 |
coloring-a-border |
|
|
Medium |
1105 |
uncrossed-lines |
|
|
Medium |
1106 |
escape-a-large-maze |
|
|
Hard |
1111 |
minimum-score-triangulation-of-polygon |
|
|
Medium |
1113 |
moving-stones-until-consecutive-ii |
|
|
Medium |
1114 |
binary-search-tree-to-greater-sum-tree |
|
|
Medium |
1115 |
valid-boomerang |
|
|
Easy |
1119 |
robot-bounded-in-circle |
|
|
Easy |
1120 |
flower-planting-with-no-adjacent |
|
|
Easy |
1121 |
partition-array-for-maximum-sum |
|
|
Medium |
1122 |
longest-duplicate-substring |
|
|
Hard |
1127 |
last-stone-weight |
Cpp |
|
Easy |
1128 |
remove-all-adjacent-duplicates-in-string |
|
|
Easy |
1129 |
longest-string-chain |
|
|
Medium |
1130 |
last-stone-weight-ii |
|
|
Medium |
1137 |
height-checker |
|
|
Easy |
1138 |
grumpy-bookstore-owner |
|
|
Medium |
1139 |
previous-permutation-with-one-swap |
|
|
Medium |
1140 |
distant-barcodes |
|
|
Medium |
1145 |
number-of-submatrices-that-sum-to-target |
|
|
Hard |
1146 |
greatest-common-divisor-of-strings |
|
|
Easy |
1147 |
flip-columns-for-maximum-number-of-equal-rows |
|
|
Medium |
1148 |
adding-two-negabinary-numbers |
|
|
Medium |