---
title: Blind 75 Problem Set
tags:
    - Blind 75
    - ONGOING SERIES
---

# :material-list-status: Blind 75 problems
This blind problems are a curated set of problems by a facebook engineer and is extremely useful for cracking the coding interview. However we've covered some of the problems in the problems sections of every other topics. Here I'll be adding links to those solutions.

[Find the blind 75 problems on leetcode $\to$](https://leetcode.com/discuss/general-discussion/460599/blind-75-leetcode-questions)

!!! danger important "Linked List problems"
    - [Reverse a Linked List](https://algorithms.theroyakash.com/LinkedLists/problems/#implement-linked-list-and-write-reverse)
    - [Detect Cycle in a Linked List](https://algorithms.theroyakash.com/LinkedLists/problems/#detect-a-cycle-in-linked-list)
    - [Merge 2 Sorted Lists](https://algorithms.theroyakash.com/LinkedLists/problems/#merge-2-sorted-lists)
    - Merge K Sorted lists
    - [Remove Nth Node From End Of List](https://algorithms.theroyakash.com/LinkedLists/problems/#remove-nth-node-from-end-of-list)
    - Reorder List


!!! danger "Heap"

    - Merge K Sorted Lists
    - [Top K Frequent Elements](https://algorithms.theroyakash.com/heaps/problems#top-k-frequent-elements)
    - Find Median from Data Stream

!!! tip "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

!!! info "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)

!!! info "Binary (bitwise operations)"

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

!!! important "Array"

    - Two Sum II
    - Best Time to Buy and Sell Stock
    - Contains Duplicate
    - [Product of Array Except Self](https://algorithms.theroyakash.com/arrays/array-problems/#product-of-array-except-self)
    - Maximum Subarray
    - Maximum Product Subarray
    - Find Minimum in Rotated Sorted Array
    - Search in Rotated Sorted Array
    - 3 Sum
    - [Container With Most Water](https://algorithms.theroyakash.com/arrays/array-problems/#two-sum-ii-input-array-is-sorted)

!!! danger "Dynamic Programming"

    - Climbing Stairs
    - Coin Change
    - Longest Increasing Subsequence
    - Longest Common Subsequence
    - Word Break Problem
    - [Combination Sum](/recursion/problems/#combination-sum)
    - House Robber
    - House Robber II
    - Decode Ways
    - Unique Paths
    - Jump Game