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NeetCode 150
131 questions · 0 seen
Extended interview prep with 150 curated problems
NeetCode 150
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NeetCode 150
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NeetCode 150
Problems
⊣ 1 Two Sum
Easy
⊣ 3 Longest Substring Without Repeating Characters
Medium
⊣ 5 Longest Palindromic Substring
Medium
⊣ 7 Reverse Integer
Medium
⊣ 11 Container With Most Water
Medium
⊣ 15 3Sum
Medium
⊣ 17 Letter Combinations of a Phone Number
Medium
⊣ 19 Remove Nth Node From End of List
Medium
⊣ 20 Valid Parentheses
Easy
⊣ 21 Merge Two Sorted Lists
Easy
⊣ 22 Generate Parentheses
Medium
⊣ 23 Merge k Sorted Lists
Hard
⊣ 25 Reverse Nodes in k-Group
Hard
⊣ 26 Remove Duplicates from Sorted Array
Easy
⊣ 27 Remove Element
Easy
⊣ 33 Search in Rotated Sorted Array
Medium
⊣ 36 Valid Sudoku
Medium
⊣ 39 Combination Sum
Medium
⊣ 42 Trapping Rain Water
Hard
⊣ 43 Multiply Strings
Medium
⊣ 45 Jump Game II
Medium
⊣ 46 Permutations
Medium
⊣ 48 Rotate Image
Medium
⊣ 49 Group Anagrams
Medium
⊣ 51 N-Queens
Hard
⊣ 53 Maximum Subarray
Medium
⊣ 54 Spiral Matrix
Medium
⊣ 55 Jump Game
Medium
⊣ 56 Merge Intervals
Medium
⊣ 57 Insert Interval
Medium
⊣ 62 Unique Paths
Medium
⊣ 70 Climbing Stairs
Easy
⊣ 73 Set Matrix Zeroes
Medium
⊣ 74 Search a 2D Matrix
Medium
⊣ 76 Minimum Window Substring
Hard
⊣ 78 Subsets
Medium
⊣ 79 Word Search
Medium
⊣ 84 Largest Rectangle in Histogram
Hard
⊣ 91 Decode Ways
Medium
⊣ 97 Interleaving String
Medium
⊣ 98 Validate Binary Search Tree
Medium
⊣ 100 Same Tree
Easy
⊣ 102 Binary Tree Level Order Traversal
Medium
⊣ 104 Maximum Depth of Binary Tree
Easy
⊣ 105 Construct Binary Tree from Preorder and Inorder Traversal
Medium
⊣ 110 Balanced Binary Tree
Easy
⊣ 115 Distinct Subsequences
Hard
⊣ 121 Best Time to Buy and Sell Stock
Easy
⊣ 124 Binary Tree Maximum Path Sum
Hard
⊣ 125 Valid Palindrome
Easy
⊣ 127 Word Ladder
Hard
⊣ 128 Longest Consecutive Sequence
Medium
⊣ 130 Surrounded Regions
Medium
⊣ 131 Palindrome Partitioning
Medium
⊣ 133 Clone Graph
Medium
⊣ 134 Gas Station
Medium
⊣ 136 Single Number
Easy
⊣ 138 Copy List with Random Pointer
Medium
⊣ 139 Word Break
Medium
⊣ 141 Linked List Cycle
Easy
⊣ 143 Reorder List
Medium
⊣ 144 Binary Tree Preorder Traversal
Easy
⊣ 146 LRU Cache
Medium
⊣ 148 Sort List
Medium
⊣ 150 Evaluate Reverse Polish Notation
Medium
⊣ 152 Maximum Product Subarray
Medium
⊣ 153 Find Minimum in Rotated Sorted Array
Medium
⊣ 155 Min Stack
Medium
⊣ 167 Two Sum II - Input Array Is Sorted
Medium
⊣ 190 Reverse Bits
Easy
⊣ 191 Number of 1 Bits
Easy
⊣ 198 House Robber
Medium
⊣ 199 Binary Tree Right Side View
Medium
⊣ 200 Number of Islands
Medium
⊣ 202 Happy Number
Easy
⊣ 206 Reverse Linked List
Easy
⊣ 207 Course Schedule
Medium
⊣ 208 Implement Trie (Prefix Tree)
Medium
⊣ 210 Course Schedule II
Medium
⊣ 211 Design Add and Search Words Data Structure
Medium
⊣ 212 Word Search II
Hard
⊣ 213 House Robber II
Medium
⊣ 215 Kth Largest Element in an Array
Medium
⊣ 217 Contains Duplicate
Easy
⊣ 224 Basic Calculator
Hard
⊣ 226 Invert Binary Tree
Easy
⊣ 230 Kth Smallest Element in a BST
Medium
⊣ 235 Lowest Common Ancestor of a Binary Search Tree
Medium
⊣ 238 Product of Array Except Self
Medium
⊣ 239 Sliding Window Maximum
Hard
⊣ 242 Valid Anagram
Easy
⊣ 268 Missing Number
Easy
⊣ 287 Find the Duplicate Number
Medium
⊣ 295 Find Median from Data Stream
Hard
⊣ 297 Serialize and Deserialize Binary Tree
Hard
⊣ 300 Longest Increasing Subsequence
Medium
⊣ 312 Burst Balloons
Hard
⊣ 322 Coin Change
Medium
⊣ 332 Reconstruct Itinerary
Hard
⊣ 338 Counting Bits
Easy
⊣ 347 Top K Frequent Elements
Medium
⊣ 355 Design Twitter
Medium
⊣ 371 Sum of Two Integers
Medium
⊣ 377 Combination Sum IV
Medium
⊣ 416 Partition Equal Subset Sum
Medium
⊣ 417 Pacific Atlantic Water Flow
Medium
⊣ 424 Longest Repeating Character Replacement
Medium
⊣ 435 Non-overlapping Intervals
Medium
⊣ 567 Permutation in String
Medium
⊣ 572 Subtree of Another Tree
Easy
⊣ 621 Task Scheduler
Medium
⊣ 647 Palindromic Substrings
Medium
⊣ 684 Redundant Connection
Medium
⊣ 695 Max Area of Island
Medium
⊣ 703 Kth Largest Element in a Stream
Easy
⊣ 704 Binary Search
Easy
⊣ 739 Daily Temperatures
Medium
⊣ 743 Network Delay Time
Medium
⊣ 746 Min Cost Climbing Stairs
Easy
⊣ 763 Partition Labels
Medium
⊣ 778 Swim in Rising Water
Hard
⊣ 787 Cheapest Flights Within K Stops
Medium
⊣ 853 Car Fleet
Medium
⊣ 875 Koko Eating Bananas
Medium
⊣ 981 Time Based Key-Value Store
Medium
⊣ 994 Rotting Oranges
Medium
⊣ 1046 Last Stone Weight
Easy
⊣ 1899 Merge Triplets to Form Target Triplet
Medium