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Top Interview 150

150 questions · 0 seen · leetcode.com

LeetCode's curated list of 150 interview questions

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Problems

⊣ 1 Two Sum
⊣ 2 Add Two Numbers
⊣ 3 Longest Substring Without Repeating Characters
⊣ 4 Median of Two Sorted Arrays
⊣ 5 Longest Palindromic Substring
⊣ 6 Zigzag Conversion
⊣ 9 Palindrome Number
⊣ 11 Container With Most Water
⊣ 12 Integer to Roman
⊣ 13 Roman to Integer
⊣ 14 Longest Common Prefix
⊣ 15 3Sum
⊣ 17 Letter Combinations of a Phone Number
⊣ 19 Remove Nth Node From End of List
⊣ 20 Valid Parentheses
⊣ 21 Merge Two Sorted Lists
⊣ 22 Generate Parentheses
⊣ 23 Merge k Sorted Lists
⊣ 25 Reverse Nodes in k-Group
⊣ 26 Remove Duplicates from Sorted Array
⊣ 27 Remove Element
⊣ 28 Find the Index of the First Occurrence in a String
⊣ 30 Substring with Concatenation of All Words
⊣ 33 Search in Rotated Sorted Array
⊣ 34 Find First and Last Position of Element in Sorted Array
⊣ 35 Search Insert Position
⊣ 36 Valid Sudoku
⊣ 39 Combination Sum
⊣ 42 Trapping Rain Water
⊣ 45 Jump Game II
⊣ 46 Permutations
⊣ 48 Rotate Image
⊣ 49 Group Anagrams
⊣ 50 Pow(x, n)
⊣ 52 N-Queens II
⊣ 53 Maximum Subarray
⊣ 54 Spiral Matrix
⊣ 55 Jump Game
⊣ 56 Merge Intervals
⊣ 57 Insert Interval
⊣ 58 Length of Last Word
⊣ 61 Rotate List
⊣ 63 Unique Paths II
⊣ 64 Minimum Path Sum
⊣ 66 Plus One
⊣ 67 Add Binary
⊣ 68 Text Justification
⊣ 69 Sqrt(x)
⊣ 70 Climbing Stairs
⊣ 71 Simplify Path
⊣ 72 Edit Distance
⊣ 73 Set Matrix Zeroes
⊣ 74 Search a 2D Matrix
⊣ 76 Minimum Window Substring
⊣ 77 Combinations
⊣ 79 Word Search
⊣ 80 Remove Duplicates from Sorted Array II
⊣ 82 Remove Duplicates from Sorted List II
⊣ 86 Partition List
⊣ 88 Merge Sorted Array
⊣ 92 Reverse Linked List II
⊣ 97 Interleaving String
⊣ 98 Validate Binary Search Tree
⊣ 100 Same Tree
⊣ 101 Symmetric Tree
⊣ 102 Binary Tree Level Order Traversal
⊣ 103 Binary Tree Zigzag Level Order Traversal
⊣ 104 Maximum Depth of Binary Tree
⊣ 105 Construct Binary Tree from Preorder and Inorder Traversal
⊣ 106 Construct Binary Tree from Inorder and Postorder Traversal
⊣ 108 Convert Sorted Array to Binary Search Tree
⊣ 112 Path Sum
⊣ 114 Flatten Binary Tree to Linked List
⊣ 117 Populating Next Right Pointers in Each Node II
⊣ 120 Triangle
⊣ 121 Best Time to Buy and Sell Stock
⊣ 122 Best Time to Buy and Sell Stock II
⊣ 123 Best Time to Buy and Sell Stock III
⊣ 124 Binary Tree Maximum Path Sum
⊣ 125 Valid Palindrome
⊣ 127 Word Ladder
⊣ 128 Longest Consecutive Sequence
⊣ 129 Sum Root to Leaf Numbers
⊣ 130 Surrounded Regions
⊣ 133 Clone Graph
⊣ 134 Gas Station
⊣ 135 Candy
⊣ 136 Single Number
⊣ 137 Single Number II
⊣ 138 Copy List with Random Pointer
⊣ 139 Word Break
⊣ 141 Linked List Cycle
⊣ 146 LRU Cache
⊣ 148 Sort List
⊣ 149 Max Points on a Line
⊣ 150 Evaluate Reverse Polish Notation
⊣ 151 Reverse Words in a String
⊣ 153 Find Minimum in Rotated Sorted Array
⊣ 155 Min Stack
⊣ 162 Find Peak Element
⊣ 167 Two Sum II - Input Array Is Sorted
⊣ 169 Majority Element
⊣ 172 Factorial Trailing Zeroes
⊣ 173 Binary Search Tree Iterator
⊣ 188 Best Time to Buy and Sell Stock IV
⊣ 189 Rotate Array
⊣ 190 Reverse Bits
⊣ 191 Number of 1 Bits
⊣ 198 House Robber
⊣ 199 Binary Tree Right Side View
⊣ 200 Number of Islands
⊣ 201 Bitwise AND of Numbers Range
⊣ 202 Happy Number
⊣ 205 Isomorphic Strings
⊣ 207 Course Schedule
⊣ 208 Implement Trie (Prefix Tree)
⊣ 209 Minimum Size Subarray Sum
⊣ 210 Course Schedule II
⊣ 211 Design Add and Search Words Data Structure
⊣ 212 Word Search II
⊣ 215 Kth Largest Element in an Array
⊣ 219 Contains Duplicate II
⊣ 221 Maximal Square
⊣ 222 Count Complete Tree Nodes
⊣ 224 Basic Calculator
⊣ 226 Invert Binary Tree
⊣ 228 Summary Ranges
⊣ 230 Kth Smallest Element in a BST
⊣ 236 Lowest Common Ancestor of a Binary Tree
⊣ 238 Product of Array Except Self
⊣ 242 Valid Anagram
⊣ 274 H-Index
⊣ 289 Game of Life
⊣ 290 Word Pattern
⊣ 295 Find Median from Data Stream
⊣ 300 Longest Increasing Subsequence
⊣ 322 Coin Change
⊣ 373 Find K Pairs with Smallest Sums
⊣ 380 Insert Delete GetRandom O(1)
⊣ 383 Ransom Note
⊣ 392 Is Subsequence
⊣ 399 Evaluate Division
⊣ 427 Construct Quad Tree
⊣ 433 Minimum Genetic Mutation
⊣ 452 Minimum Number of Arrows to Burst Balloons
⊣ 502 IPO
⊣ 530 Minimum Absolute Difference in BST
⊣ 637 Average of Levels in Binary Tree
⊣ 909 Snakes and Ladders
⊣ 918 Maximum Sum Circular Subarray