- Compiler:
Clang++
Run the command make <Problem ID> to compile the .cpp file.
For example, for the problem 0002_add_two_numbers, run
# Run the following command to create the problem folder with template
$ make problem 2. Add Two Numbers
cp -r ./src/Template ./src/0002_add_two_numbers
# Compiling the source code and generating binary file
$ make 0002
Compiling binary file: bin/0002_add_two_numbers
# Then running the compilied binary file to see the result of test cases
$ ./bin/0002_add_two_numbers
# Clean all compilied files under ./bin/
$ make clean
rm -rf ./bin/*| # | Title | Solution | Difficulty | Tags |
|---|---|---|---|---|
| 0001 | Two Sum | C++ | Easy | Array,Hash Table |
| 0002 | Add Two Numbers | C++ | Medium | Linked List,Recursion |
| 0003 | Longest Substring Without Repeating Characters | C++ | Medium | Hash Table,Sliding Window |
| 0004 | Median of Two Sorted Arrays | C++ | Hard | Array,Binary Search,Divide and Conquer |
| 0005 | Longest Palindromic Substring | C++ | Medium | Dynamic Programming |
| 0006 | ZigZag Conversion | C++ | Medium | String |
| 0007 | Reverse Integer | C++ | Easy | Math |
| 0008 | String to Integer (atoi) | C++ | Medium | String |
| 0009 | Palindrome Number | C++ | Easy | Math |
| 0011 | Container With Most Water | C++ | Medium | Array,Two Pointers,Greedy |
| 0019 | Remove Nth Node From End of List | C++ | Medium | Linked List,Two Pointers |
| 0020 | Valid Parentheses | C++ | Easy | String,Stack |
| 0021 | Merge Two Sorted Lists | C++ | Easy | Linked List,Recursion |
| 0023 | Merge k Sorted Lists | C++ | Hard | Linked List,Divide and Conquer,Heap (Priority Queue),Merge Sort |
| 0024 | Swap Nodes in Pairs | C++ | Medium | Linked List,Recursion |
| 0031 | Next Permutation | C++ | Medium | Array,Two Pointers |
| 0033 | Search in Rotated Sorted Array | C++ | Medium | Array, Binary Search |
| 0034 | Find First and Last Position of Element in Sorted Array | C++ | Medium | Array,Binary Search |
| 0035 | Search Insert Position | C++ | Easy | Array,Binary Search |
| 0039 | Combination Sum | C++ | Medium | Array,Backtracking |
| 0043 | Multiply Strings | C++ | Medium | Math,String,Simulation |
| 0046 | Permutations | C++ | Medium | Array,Backtracking |
| 0051 | N-Queens | C++ | Hard | Array, Backtracking |
| 0052 | N-Queens II | C++ | Hard | Backtracking |
| 0053 | Maximum Subarray | C++ | Easy | Array,Divide and Conquer,Dynamic Programming |
| 0054 | Spiral Matrix | C++ | Medium | Array,Matrix,Simulation |
| 0059 | Spiral Matrix II | C++ | Medium | Array,Matrix,Simulation |
| 0061 | Rotate List | C++ | Medium | Linked List,Two Pointers |
| 0062 | Unique Paths | C++ | Medium | Math,Dynamic Programming,Combinations |
| 0063 | Unique Paths II | C++ | Medium | Array,Dynamic Programming,Matrix |
| 0070 | Climbing Stairs | C++ | Easy | Math,Dynamic Programming,Memoization |
| 0071 | Simplify Path | C++ | Medium | String,Stack |
| 0074 | Search a 2D Matrix | C++ | Medium | Array,Binary Search,Matrix |
| 0077 | Combinations | C++ | Medium | Array,Backtracking |
| 0078 | Subsets | C++ | Medium | Array,Backtracking,Bit Manipulation |
| 0080 | Remove Duplicates from Sorted Array II | C++ | Medium | Array,Two Pointers |
| 0088 | Merge Sorted Array | C++ | Easy | Array,Two Pointers,Sorting |
| 0096 | Unique Binary Search Trees | C++ | Medium | Math,Dynamic Programming,Tree,Binary Search Tree,Binary Tree |
| 0115 | Distinct Subsequences | C++ | Hard | String,Dynamic Programming |
| 0116 | Populating Next Right Pointers in Each Node | C++ | Medium | Tree,Depth-First Search,Breadth-first Search,Binary Tree |
| 0118 | Pascal's Triangle | C++ | Easy | Array,Dynamic Programming |
| 0120 | Triangle | C++ | Medium | Array,Dynamic Programming |
| 0121 | Best Time to Buy and Sell Stock | C++ | Easy | Array,Dynamic Programming |
| 0122 | Best Time to Buy and Sell Stock II | C++ | Medium | Array,Dynamic Programming,Greedy |
| 0136 | Single Number | C++ | Easy | Array,Bit Manipulation |
| 0137 | Single Number II | C++ | Medium | Array,Bit Manipulation |
| 0141 | Linked List Cycle | C++ | Easy | Hash Table,Linked List,Two Pointers |
| 0147 | Insertion Sort List | C++ | Medium | Linked List,Sorting |
| 0152 | Maximum Product Subarray | C++ | Medium | Array,Dynamic Programming |
| 0153 | Find Minimum in Rotated Sorted Array | C++ | Medium | Array,Binary Search |
| 0160 | Intersection of Two Linked Lists | C++ | Easy | Hash Table,Linked List,Two Pointers |
| 0162 | Find Peak Element | C++ | Medium | Array,Binary Search |
| 0165 | Compare Version Numbers | C++ | Medium | Two Pointers,String |
| 0167 | Two Sum II - Input array is sorted | C++ | Easy | Array,Two Pointers,Binary Search |
| 0169 | Majority Element | C++ | Easy | Array,Hash Table,Divide and Conquer,Sorting,Counting |
| 0171 | Excel Sheet Column Number | C++ | Easy | Math,String |
| 0189 | Rotate Array | C++ | Medium | Array,Math,Two Pointers |
| 0190 | Reverse Bits | C++ | Easy | Divide and Conquer,Bit Manipulation |
| 0191 | Number of 1 Bits | C++ | Easy | Bit Manipulation |
| 0198 | House Robber | C++ | Medium | Array,Dynamic Programming |
| 0203 | Remove Linked List Elements | C++ | Easy | Linked List,Recursion |
| 0206 | Reverse Linked List | C++ | Medium | Linked List,Recursion |
| 0213 | House Robber II | C++ | Medium | Array,Dynamic Programming |
| 0215 | Kth Largest Element in an Array | C++ | Medium | Array,Divide and Conquer,Sorting,Heap (Priority Queue),Quickselect |
| 0217 | Contains Duplicate | C++ | Easy | Array,Hash Table,Sorting |
| 0231 | Power of Two | C++ | Easy | Math,Bit Manipulation,Recursion |
| 0238 | Product of Array Except Self | C++ | Medium | Array,Prefix Sum |
| 0258 | Add Digits | C++ | Easy | Math,Simulation,Number Theory |
| 0260 | Single Number III | C++ | Medium | Array,Bit Manipulation |
| 0278 | First Bad Version | C++ | Easy | Binary Search,Interactive |
| 0282 | Expression Add Operators | C++ | Hard | Math,String,Backtracking |
| 0283 | Move Zeroes | C++ | Easy | Array,Two Pointers |
| 0289 | Game of Life | C++ | Medium | Array,Matrix,Simulation |
| 0304 | Range Sum Query 2D - Immutable | C++ | Medium | Array,Design,Matrix,Prefix Sum |
| 0328 | Odd Even Linked List | C++ | Medium | Linked List |
| 0331 | Verify Preorder Serialization of a Binary Tree | C++ | Medium | String,Stack,Tree,Binary Tree |
| 0338 | Counting Bits | C++ | Easy | Dynamic Programming,Bit Manipulation |
| 0344 | Reverse String | C++ | Easy | Two Pointers,String,Recursion |
| 0347 | Top K Frequent Elements | C++ | Medium | Array,Hash Table,Divide and Conquer,Sorting,Heap (Priority Queue),Bucket Sort,Counting,Quickselect |
| 0350 | Intersection of Two Arrays II | C++ | Easy | Array,Hash Table,Two Pointers,Binary Search,Sorting |
| 0367 | Valid Perfect Square | C++ | Easy | Math,Binary Search |
| 0368 | Largest Divisible Subset | C++ | Medium | Array,Math,Dynamic Programming,Sorting |
| 0374 | Guess Number Higher or Lower | C++ | Easy | Binary Search,Interactive |
| 0378 | Kth Smallest Element in a Sorted Matrix | C++ | Medium | Array,Binary Search,Sorting,Heap (Priority Queue),Matrix |
| 0389 | Find the Difference | C++ | Easy | Hash Table,String,Bit Manipulation,Sorting |
| 0413 | Arithmetic Slices | C++ | Medium | Array,Dynamic Programming |
| 0416 | Partition Equal Subset Sum | C++ | Medium | Array,Dynamic Programming |
| 0438 | Find All Anagrams in a String | C++ | Medium | Hash Table,String,Sliding Window |
| 0441 | Arranging Coins | C++ | Medium | Math,Binary Search |
| 0442 | Find All Duplicates in an Array | C++ | Medium | Array,Hash Table |
| 0448 | Find All Numbers Disappeared in an Array | C++ | Easy | Array,Hash Table |
| 0454 | 4Sum II | C++ | Medium | Array,Hash Table |
| 0461 | Hamming Distance | C++ | Easy | Bit Manipulation |
| 0485 | Max Consecutive Ones | C++ | Easy | Array |
| 0525 | Contiguous Array | C++ | Medium | Array,Hash Table,Prefix Sum |
| 0532 | K-diff Pairs in an Array | C++ | Medium | Array,Hash Table,Two Pointers,Binary Search,Sorting |
| 0540 | Single Element in a Sorted Array | C++ | Medium | Array,Binary Search |
| 0542 | 01 Matrix | C++ | Medium | Array,Dynamic Programming,Breadth-first Search,Matrix |
| 0557 | Reverse Words in a String III | C++ | Easy | Two Pointers,String |
| 0560 | Subarray Sum Equals K | C++ | Medium | Hash Table,Prefix Sum |
| 0566 | Reshape the Matrix | C++ | Easy | Array,Matrix,Simulation |
| 0567 | Permutation in String | C++ | Medium | Hash Table,Two Pointers,String,Sliding Window |
| 0668 | Kth Smallest Number in Multiplication Table | C++ | Hard | Binary Search |
| 0680 | Valid Palindrome II | C++ | Easy | Two Pointers,String,Greedy |
| 0682 | Baseball Game | C++ | Easy | Array,Stack,Simulation |
| 0695 | Max Area of Island | C++ | Medium | Array,Depth-First Search,Breadth-first Search,Union Find,Matix |
| 0703 | Kth Largest Element in a Stream | C++ | Easy | Tree,Design,Binary Search Tree,Heap (Priority Queue),Binary Tree,Data Stream |
| 0704 | Binary Search | C++ | Easy | Array,Binary Search |
| 0733 | Flood Fill | C++ | Easy | Array,Depth-First Search,Breadth-first Search,Matrix |
| 0739 | Daily Temperatures | C++ | Medium | Array,Stack,Monotonic Stack |
| 0740 | Delete and Earn | C++ | Medium | Array,Hash Table,Dynamic Programming |
| 0764 | Largest Plus Sign | C++ | Medium | Array,Dynamic Programming |
| 0784 | Letter Case Permutation | C++ | Medium | String,Backtracking,Bit Manipulation |
| 0797 | All Paths From Source to Target | C++ | Medium | Backtracking,Depth-First Search,Breadth-First Search,Graph |
| 0799 | Champagne Tower | C++ | Medium | Dynamic Programming |
| 0852 | Peak Index in a Mountain Array | C++ | Easy | Array,Binary Search |
| 0876 | Transpose Matrix | C++ | Easy | Array,Matrix,Simulation |
| 0876 | Middle of the Linked List | C++ | Easy | Linked List,Two Pointers |
| 0878 | Nth Magical Number | C++ | Hard |
Math,Binary Search |
| 0917 | Reverse Only Letters | C++ | Easy | Two Pointers,String |
| 0923 | 3Sum With Multiplicity | C++ | Medium | Array,Hash Table,Two Pointers,Sorting,Counting |
| 0940 | Distinct Subsequences II | C++ | Hard | String, Dynamic Programming |
| 0976 | Largest Perimeter Triangle | C++ | Easy | Array,Math,Greedy,Sorting |
| 0977 | Squares of a Sorted Array | C++ | Easy | Array,Two Pointers,Sorting |
| 0978 | Longest Turbulent Subarray | C++ | Medium | Array,Dynamic Programming,Sliding Window |
| 0980 | Unique Paths III | C++ | Hard | Array,Backtracking,Bit Manipulation,Matrix |
| 0986 | Interval List Intersections | C++ | Medium | Array,Two Pointers |
| 0994 | Rotting Oranges | C++ | Medium | Array,Breadth-first Search,Matrix |
| 1046 | Last Stone Weight | C++ | Easy | Array,Heap (Priority Queue) |
| 1137 | N-th Tribonacci Number | C++ | Easy | Math,Dynamic Programming,Memoization |
| 1189 | Maximum Number of Balloons | C++ | Easy | Hash Table,String,Counting |
| 1217 | Minimum Cost to Move Chips to The Same Position | C++ | Easy | Array,Math,Greedy |
| 1260 | Shift 2D Grid | C++ | Easy | Array,Matrix,Simulation |
| 1275 | Find Winner on a Tic Tac Toe Game | C++ | Easy | Array,Hash Table,Matrix,Simulation |
| 1281 | Subtract the Product and Sum of Digits of an Integer | C++ | Easy | |
| 1288 | Remove Covered Intervals | C++ | Medium | Array,Sorting |
| 1290 | Convert Binary Number in a Linked List to Integer | C++ | Easy | Linked List,Math |
| 1293 | Shortest Path in a Grid with Obstacles Elimination | C++ | Hard | Array,Breadth-first Search,Matrix |
| 1306 | Jump Game III | C++ | Medium | Array,Depth-First Search,Breadth-First Search |
| 1328 | Break a Palindrome | C++ | Medium | String,Greedy |
| 1332 | Remove Palindromic Subsequences | C++ | Easy | Two Pointers,String |
| 1359 | Count All Valid Pickup and Delivery Options | C++ | Hard | Math,Dynamic Programming,combinations |
| 1413 | Minimum Value to Get Positive Step by Step Sum | C++ | Easy | Array,Prefix Sum |
| 1442 | Count Triplets That Can Form Two Arrays of Equal XOR | C++ | Medium | Array,Hash Table,Math,Bit Manipulation,Prefix Sum |
| 1446 | Consecutive Characters | C++ | Easy | String |
| 1480 | Running Sum of 1d Array | C++ | Easy | Array, Prefix Sum |
| 1491 | Average Salary Excluding the Minimum and Maximum Salary | C++ | Easy | Array,Sorting |
| 1523 | Count Odd Numbers in an Interval Range | C++ | Easy | Math |
| 1658 | Minimum Operations to Reduce X to Zero | C++ | Medium | Array,Hash Table,Binary Search,Sliding Window,Prefix Sum |
| 1672 | Richest Customer Wealth | C++ | Easy | Array, Matrix |
| 1679 | Max Number of K-Sum Pairs | C++ | Medium | Array,Hash Table,Two Pointers,Sorting |
| 1711 | Count Good Meals | C++ | Medium | Array, Hash Table |
| 1721 | Swapping Nodes in a Linked List | C++ | Medium | Linked List,Two Pointers |
| 1987 | Number of Unique Good Subsequences | C++ | Hard | String,Dynamic Programming |