Curated List of Top 75 LeetCode

LeetCodeQuestions.md

Array

• Two Sum
• Best Time to Buy and Sell Stock
• Contains Duplicate
• Product of Array Except Self
• Maximum Subarray
• Maximum Product Subarray
• Find Minimum in Rotated Sorted Array
• Search in Rotated Sorted Array
• 3Sum
• Container With Most Water

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Binary

• Sum of Two Integers
• Number of 1 Bits
• Counting Bits
• Missing Number
• Reverse Bits

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Dynamic Programming

• Climbing Stairs
• Coin Change
• Longest Increasing Subsequence
• Longest Common Subsequence
• Word Break Problem
• Combination Sum
• House Robber
• House Robber II
• Decode Ways
• Unique Paths
• Jump Game

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Graph

• Clone Graph
• Course Schedule
• Pacific Atlantic Water Flow
• Number of Islands
• Longest Consecutive Sequence
• Alien Dictionary (Leetcode Premium)
• Graph Valid Tree (Leetcode Premium)
• Number of Connected Components in an Undirected Graph (Leetcode Premium)

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Interval

• Insert Interval
• Merge Intervals
• Non-overlapping Intervals
• Meeting Rooms (Leetcode Premium)
• Meeting Rooms II (Leetcode Premium)

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Linked List

• Reverse a Linked List
• Detect Cycle in a Linked List
• Merge Two Sorted Lists
• Merge K Sorted Lists
• Remove Nth Node From End Of List
• Reorder List

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Matrix

• Set Matrix Zeroes
• Spiral Matrix
• Rotate Image
• Word Search

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String

• Longest Substring Without Repeating Characters
• Longest Repeating Character Replacement
• Minimum Window Substring
• Valid Anagram
• Group Anagrams
• Valid Parentheses
• Valid Palindrome
• Longest Palindromic Substring
• Palindromic Substrings
• Encode and Decode Strings (Leetcode Premium)

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Tree

• Maximum Depth of Binary Tree
• Same Tree
• Invert/Flip Binary Tree
• Binary Tree Maximum Path Sum
• Binary Tree Level Order Traversal
• Serialize and Deserialize Binary Tree
• Subtree of Another Tree
• Construct Binary Tree from Preorder and Inorder Traversal
• Validate Binary Search Tree
• Kth Smallest Element in a BST
• Lowest Common Ancestor of BST
• Implement Trie (Prefix Tree)
• Add and Search Word
• Word Search II

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Heap

• Merge K Sorted Lists
• Top K Frequent Elements
• Find Median from Data Stream

Important Link:

14 Patterns to Ace Any Coding Interview Question

Hi everyone, I'm the OP of Blind 75. Thank you for sharing it! Never would I expect Blind 75 to be so famous. In 2022, I made Grind 75 as a better version of Blind 75 - updated questions, filtering, sorting and weekly plans - https://www.techinterviewhandbook.org/grind75

Thanks for the updated link @yangshun!

@yangshun - Nice! So, the included 75 questions aren't the same? I like the extra features you've added; just trying to better understand what has been removed from the original Blind 75.

@rinogo Grind 75 actually contains 169 questions but by default you see 75. Only a few questions have been removed from Blind 75, otherwise most of Blind 75 are within Grind 75/169.

Number of Islands would go in the matrix problems right? It does follow DFS but seems appropriate in matrix.

Can we get an extended version of 75? Like maybe a list of 200 problems or so? Thanks!!

@raiyan22 check out https://www.grind75.com, it has up to 169 questions

I want to know what's the time that exists beside the questions ?

Hello, is this question misplaced in graph tag or is it correct @krishnadey30 ?

Longest Consecutive Sequence