| Binary Tree Upside Down đź““ |
Java |
2014/11/16 |
Medium |
| Min Stack |
Java |
2014/11/09 |
Easy |
| Find Minimum in Rotated Sorted Array II |
Java |
2014/10/20 |
Hard |
| Find Minimum in Rotated Sorted Array |
Java |
2014/10/15 |
Medium |
| Maximum Product Subarray |
Java |
2014/9/23 |
Medium |
| Reverse Words in a String |
Java |
2014/3/5 |
Medium |
| Evaluate Reverse Polish Notation |
Java |
2013/11/27 |
Medium |
| Max Points on a Line |
Java |
2013/11/22 |
Hard |
| Sort List |
Java |
2013/11/16 |
Medium |
| Insertion Sort List |
Java |
2013/11/12 |
Medium |
| LRU Cache |
Java |
2013/11/9 |
Hard |
| Binary Tree Postorder Traversal |
Java |
2013/11/7 |
Hard |
| Binary Tree Preorder Traversal |
Java |
2013/11/5 |
Medium |
| Reorder List |
Java |
2013/11/2 |
Medium |
| Linked List Cycle II |
Java |
2013/10/30 |
Medium |
| Linked List Cycle |
Java |
2013/10/28 |
Medium |
| Word Break II |
Java |
2013/10/5 |
Hard |
| Word Break |
Java |
2013/10/4 |
Medium |
| Copy List with Random Pointer |
Java |
2013/10/3 |
Hard |
| Single Number II |
Java |
2013/10/2 |
Medium |
| Single Number |
Java |
2013/10/1 |
Medium |
| Candy |
Java |
2013/9/30 |
Hard |
| Gas Station |
Java |
2013/9/28 |
Medium |
| Clone Graph |
Java |
2013/9/24 |
Medium |
| Palindrome Partitioning II |
Java |
2013/2/28 |
Hard |
| Palindrome Partitioning |
Java |
2013/2/27 |
Medium |
| Surrounded Regions |
Java |
2013/2/21 |
Medium |
| Sum Root to Leaf Numbers |
Java |
2013/2/18 |
Medium |
| Longest Consecutive Sequence |
Java |
2013/2/13 |
Hard |
| Word Ladder II |
Java |
2013/2/10 |
Hard |
| Word Ladder |
Java |
2013/2/10 |
Medium |
| Valid Palindrome |
Java |
2013/1/12 |
Easy |
| Binary Tree Maximum Path Sum |
Java |
2012/11/7 |
Hard |
| Best Time to Buy and Sell Stock III |
Java |
2012/11/6 |
Hard |
| Best Time to Buy and Sell Stock II |
Java |
2012/10/30 |
Medium |
| Best Time to Buy and Sell Stock |
Java |
2012/10/30 |
Medium |
| Triangle |
Java |
2012/10/29 |
Medium |
| Pascal's Triangle II |
Java |
2012/10/28 |
Easy |
| Pascal's Triangle |
Java |
2012/10/28 |
Easy |
| Populating Next Right Pointers in Each Node II |
Java |
2012/10/28 |
Hard |
| Populating Next Right Pointers in Each Node |
Java |
2012/10/28 |
Medium |
| Distinct Subsequences |
Java |
2012/10/18 |
Hard |
| Flatten Binary Tree to Linked List |
Java |
2012/10/14 |
Medium |
| Path Sum II |
Java |
2012/10/14 |
Medium |
| Path Sum |
Java |
2012/10/13 |
Easy |
| Minimum Depth of Binary Tree |
Java |
2012/10/9 |
Easy |
| Balanced Binary Tree |
Java |
2012/10/8 |
Easy |
| Convert Sorted List to Binary Search Tree |
Java |
2012/10/2 |
Medium |
| Convert Sorted Array to Binary Search Tree |
Java |
2012/10/2 |
Medium |
| Binary Tree Level Order Traversal II |
Java |
2012/10/1 |
Easy |
| Construct Binary Tree from Inorder and Postorder Traversal |
Java |
2012/9/30 |
Medium |
| Construct Binary Tree from Preorder and Inorder Traversal |
Java |
2012/9/30 |
Medium |
| Maximum Depth of Binary Tree |
Java |
2012/9/29 |
Easy |
| Binary Tree Zigzag Level Order Traversal |
Java |
2012/9/28 |
Medium |
| Binary Tree Level Order Traversal |
Java |
2012/9/28 |
Easy |
| Symmetric Tree |
Java |
2012/9/23 |
Easy |
| Same Tree |
Java |
2012/9/3 |
Easy |
| Recover Binary Search Tree |
Java |
2012/9/1 |
Hard |
| Validate Binary Search Tree |
Java |
2012/8/31 |
Medium |
| Interleaving String |
Java |
2012/8/30 |
Hard |
| Unique Binary Search Trees II |
Java |
2012/8/27 |
Medium |
| Unique Binary Search Trees |
Java |
2012/8/27 |
Medium |
| Binary Tree Inorder Traversal |
Java |
2012/8/27 |
Medium |
| Restore IP Addresses |
Java |
2012/8/7 |
Medium |
| Reverse Linked List II |
Java |
2012/6/27 |
Medium |
| Subsets II |
Java |
2012/6/25 |
Medium |
| Decode Ways |
Java |
2012/6/25 |
Medium |
| Gray Code |
Java |
2012/5/20 |
Medium |
| Merge Sorted Array |
Java |
2012/5/20 |
Easy |
| Scramble String |
Java |
2012/4/30 |
Hard |
| Partition List |
Java |
2012/4/30 |
Medium |
| Maximal Rectangle |
Java |
2012/4/23 |
Hard |
| Largest Rectangle in Histogram |
Java |
2012/4/22 |
Hard |
| Remove Duplicates from Sorted List II |
Java |
2012/4/22 |
Medium |
| Remove Duplicates from Sorted List |
Java |
2012/4/22 |
Easy |
| Search in Rotated Sorted Array II |
Java |
2012/4/19 |
Medium |
| Remove Duplicates from Sorted Array II |
Java |
2012/4/19 |
Medium |
| Word Search |
Java |
2012/4/18 |
Medium |
| Subsets |
Java |
2012/4/18 |
Medium |
| Combinations |
Java |
2012/4/18 |
Medium |
| Minimum Window Substring |
Java |
2012/4/15 |
Hard |
| Sort Colors |
Java |
2012/4/8 |
Medium |
| Search a 2D Matrix |
Java |
2012/4/6 |
Medium |
| Set Matrix Zeroes |
Java |
2012/4/5 |
Medium |
| Edit Distance |
Java |
2012/4/4 |
Hard |
| Simplify Path |
Java |
2012/4/3 |
Medium |
| Climbing Stairs |
Java |
2012/4/3 |
Easy |
| Sqrt(x) |
Java |
2012/4/3 |
Medium |
| Text Justification |
Java |
2012/4/3 |
Hard |
| Plus One |
Java |
2012/4/2 |
Easy |
| Valid Number |
Java |
2012/4/2 |
Easy |
| Add Binary |
Java |
2012/4/2 |
Easy |
| Merge Two Sorted Lists |
Java |
2012/3/30 |
Easy |
| Minimum Path Sum |
Java |
2012/3/28 |
Medium |
| Unique Paths II |
Java |
2012/3/28 |
Medium |
| Unique Paths |
Java |
2012/3/28 |
Medium |
| Rotate List |
Java |
2012/3/27 |
Medium |
| Permutation Sequence |
Java |
2012/3/27 |
Medium |
| Spiral Matrix II |
Java |
2012/3/27 |
Medium |
| Length of Last Word |
Java |
2012/3/27 |
Easy |
| Insert Interval |
Java |
2012/3/27 |
Hard |
| Merge Intervals |
Java |
2012/3/26 |
Hard |
| Jump Game |
Java |
2012/3/24 |
Medium |
| Spiral Matrix |
Java |
2012/3/24 |
Medium |
| Maximum Subarray |
Java |
2012/3/21 |
Medium |
| N-Queens II |
Java |
2012/3/20 |
Hard |
| N-Queens |
Java |
2012/3/19 |
Hard |
| "Pow(x, n)" |
Java |
2012/3/19 |
Medium |
| Anagrams |
Java |
2012/3/19 |
Medium |
| Rotate Image |
Java |
2012/3/17 |
Medium |
| Permutations II |
Java |
2012/3/16 |
Hard |
| Permutations |
Java |
2012/3/16 |
Medium |
| Jump Game II |
Java |
2012/3/16 |
Hard |
| Wildcard Matching |
Java |
2012/3/15 |
Hard |
| Multiply Strings |
Java |
2012/3/12 |
Medium |
| Trapping Rain Water |
Java |
2012/3/10 |
Hard |
| First Missing Positive |
Java |
2012/3/8 |
Hard |
| Combination Sum II |
Java |
2012/3/6 |
Medium |
| Combination Sum |
Java |
2012/3/6 |
Medium |
| Count and Say |
Java |
2012/3/5 |
Easy |
| Sudoku Solver |
Java |
2012/3/4 |
Hard |
| Valid Sudoku |
Java |
2012/3/3 |
Easy |
| Search Insert Position |
Java |
2012/3/3 |
Medium |
| Search for a Range |
Java |
2012/3/2 |
Medium |
| Search in Rotated Sorted Array |
Java |
2012/3/2 |
Hard |
| Longest Valid Parentheses |
Java |
2012/2/29 |
Hard |
| Next Permutation |
Java |
2012/2/25 |
Medium |
| Substring with Concatenation of All Words |
Java |
2012/2/23 |
Hard |
| Divide Two Integers |
Java |
2012/2/18 |
Medium |
| Implement strStr() |
Java |
2012/2/18 |
Easy |
| Remove Element |
Java |
2012/2/16 |
Easy |
| Remove Duplicates from Sorted Array |
Java |
2012/2/16 |
Easy |
| Reverse Nodes in k-Group |
Java |
2012/2/15 |
Hard |
| Swap Nodes in Pairs |
Java |
2012/2/14 |
Medium |
| Merge k Sorted Lists |
Java |
2012/2/13 |
Hard |
| Generate Parentheses |
Java |
2012/2/12 |
Medium |
| Valid Parentheses |
Java |
2012/1/30 |
Easy |
| Remove Nth Node From End of List |
Java |
2012/1/27 |
Easy |
| Letter Combinations of a Phone Number |
Java |
2012/1/26 |
Medium |
| 4Sum |
Java |
2012/1/26 |
Medium |
| 3Sum Closest |
Java |
2012/1/18 |
Medium |
| 3Sum |
Java |
2012/1/17 |
Medium |
| Longest Common Prefix |
Java |
2012/1/17 |
Easy |
| Roman to Integer |
Java |
2012/1/15 |
Easy |
| Integer to Roman |
Java |
2012/1/15 |
Medium |
| Container With Most Water |
Java |
2012/1/8 |
Medium |
| Regular Expression Matching |
Java |
2012/1/8 |
Hard |
| Palindrome Number |
Java |
2012/1/4 |
Easy |
| String to Integer (atoi) |
Java |
2011/12/26 |
Easy |
| Reverse Integer |
Java |
2011/12/25 |
Easy |
| ZigZag Conversion |
Java |
2011/12/5 |
Easy |
| Longest Palindromic Substring |
Java |
2011/11/11 |
Medium |
| Add Two Numbers |
Java |
2011/11/1 |
Medium |
| Longest Substring Without Repeating Characters |
Java |
2011/5/15 |
Medium |
| Median of Two Sorted Arrays |
Java |
2011/3/27 |
Hard |
| Two Sum |
Java |
2011/3/13 |
Medium |