StudyDSA

StudyDSA

Blind 75 🛠️

The infamous list of essential coding problems by a Meta tech lead on Blind. This list is designed to help software engineers efficiently master the fundamental concepts and patterns needed for technical interviews.

Copyright © StudyDSA. All rights reserved.

Blind 75 🛠️

The infamous list of essential coding problems by a Meta tech lead on Blind. This list is designed to help software engineers efficiently master the fundamental concepts and patterns needed for technical interviews.

Array / String

Completed	Title		Status	Notes	Solution
	Contains Duplicate	Easy
	Valid Anagram	Easy
	Two Sum	Easy
	Group Anagrams	Medium
	Top K Frequent Elements	Medium
	Encode and Decode Strings	Medium
	Product of Array Except Self	Medium
	Longest Consecutive Sequence	Medium

Two Pointers

Completed	Title		Status	Notes	Solution
	Valid Palindrome	Easy
	3Sum	Medium
	Container With Most Water	Medium

Sliding Window

Completed	Title		Status	Notes	Solution
	Best Time to Buy And Sell Stock	Easy
	Longest Substring Without Repeating Characters	Medium
	Longest Repeating Character Replacement	Medium
	Minimum Window Substring	Hard

Stacks

Completed	Title		Status	Notes	Solution
	Valid Parentheses	Easy

Binary Search

Completed	Title		Status	Notes	Solution
	Find Minimum in Rotated Sorted Array	Medium
	Search in Rotated Sorted Array	Medium

Linked Lists

Completed	Title		Status	Notes	Solution
	Reverse Linked List	Easy
	Merge Two Sorted Lists	Easy
	Linked List Cycle	Easy
	Reorder List	Medium
	Remove Nth Node From End of List	Medium
	Merge k Sorted Lists	Hard

Trees

Completed	Title		Status	Notes	Solution
	Invert Binary Tree	Easy
	Maximum Depth of Binary Tree	Easy
	Same Tree	Easy
	Subtree of Another Tree	Easy
	Lowest Common Ancestor of a Binary Search Tree	Medium
	Binary Tree Level Order Traversal	Medium
	Validate Binary Search Tree	Medium
	Kth Smallest Element in a BST	Medium
	Construct Binary Tree from Preorder and Inorder Traversal	Medium
	Binary Tree Maxiumum Path Sum	Hard
	Serialize and Deserialize Binary Tree	Hard

Heaps / Priority Queues

Completed	Title		Status	Notes	Solution
	Find Median from Data Stream	Hard

Backtracking

Completed	Title		Status	Notes	Solution
	Combination Sum	Medium
	Word Search	Medium

Tries

Completed	Title		Status	Notes	Solution
	Implement Trie (Prefix Tree)	Medium
	Design Add and Search Words Data Structure	Medium
	Word Search II	Hard

Graphs

Completed	Title		Status	Notes	Solution
	Number of Islands	Medium
	Clone Graph	Medium
	Pacific Atlantic Water Flow	Medium
	Course Schedule	Medium
	Graph Valid Tree	Medium
	Number of Connected Components in an Undirected Graph	Medium

Advanced Graphs

Completed	Title		Status	Notes	Solution
	Alien Dictionary	Hard

Dynamic Programming - 1D

Completed	Title		Status	Notes	Solution
	Climbing Stairs	Easy
	House Robber	Medium
	House Robber II	Medium
	Longest Palindromic Substring	Medium
	Palindromic Substrings	Medium
	Decode Ways	Medium
	Coin Change	Medium
	Maximum Product Subarray	Medium
	Word Break	Medium
	Longest Increasing Subsequence	Medium

Dynamic Programming - Multidimensional

Completed	Title		Status	Notes	Solution
	Unique Paths	Medium
	Longest Common Subsequence	Medium

Greedy Algorithms

Completed	Title		Status	Notes	Solution
	Maximum Subarray	Medium
	Jump Game	Medium

Intervals

Completed	Title		Status	Notes	Solution
	Meeting Rooms	Easy
	Meeting Rooms II	Medium
	Insert Interval	Medium
	Merge Intervals	Medium
	Non-overlapping Intervals	Medium

Math

Completed	Title		Status	Notes	Solution
	Rotate Image	Medium
	Spiral Matrix	Medium
	Set Matrix Zeroes	Medium

Bit Manipulation

Completed	Title		Status	Notes	Solution
	Number of 1 Bits	Easy
	Counting Bits	Easy
	Reverse Bits	Easy
	Missing Number	Easy
	Sum of Two Integers	Medium