Blind 75 Quests

Think through every problem like a puzzle.

Socratic questions first. Predict the next move second. No pattern spoiler dump up front. 98 Blind 75 quests ready.

0 XP 0 day streak 0/98 cleared
Filters
Easyarrays-hashing

Two Sum

+90
Easyarrays-hashing

Contains Duplicate

+90
Mediumheap

Top K Frequent Elements

+120
Mediumprefix-sum

Product of Array Except Self

+120
Easytwo-pointers

Valid Palindrome

+90
Mediumtwo-pointers

Two Sum II - Input Array Is Sorted

+120
Mediumtwo-pointers

3Sum

+120
Mediumtwo-pointers

Container With Most Water

+120
Easygreedy

Best Time to Buy and Sell Stock

+90
Mediumsliding-window

Longest Substring Without Repeating Characters

+120
Mediumsliding-window

Longest Repeating Character Replacement

+120
Hardsliding-window

Minimum Window Substring

+160
Easystack

Valid Parentheses

+90
Mediumstack

Daily Temperatures

+120
Mediumstack

Car Fleet

+120
Hardstack

Largest Rectangle in Histogram

+160
Easybinary-search

Binary Search

+90
Mediumbinary-search

Search a 2D Matrix

+120
Mediumbinary-search

Koko Eating Bananas

+140
Mediumbinary-search

Find Minimum in Rotated Sorted Array

+120
Mediumbinary-search

Search in Rotated Sorted Array

+120
Easylinked-list

Reverse Linked List

+90
Easylinked-list

Merge Two Sorted Lists

+80
Mediumlinked-list

Reorder List

+120
Mediumfast-slow-pointers

Remove Nth Node From End of List

+120
Easyfast-slow-pointers

Linked List Cycle

+90
Hardheap

Merge K Sorted Lists

+160
Easytrees

Invert Binary Tree

+90
Easytrees

Maximum Depth of Binary Tree

+80
Easytrees

Diameter of Binary Tree

+80
Easytrees

Balanced Binary Tree

+80
Easytrees

Same Tree

+80
Easytrees

Subtree of Another Tree

+80
Mediumbst

Lowest Common Ancestor of BST

+120
Mediumtrees

Binary Tree Level Order Traversal

+120
Mediumtrees

Binary Tree Right Side View

+120
Mediumtrees

Count Good Nodes in Binary Tree

+120
Mediumbst

Validate Binary Search Tree

+120
Mediumbst

Kth Smallest Element in BST

+120
Mediumtrees

Construct Binary Tree from Preorder and Inorder

+120
Hardtrees

Binary Tree Maximum Path Sum

+160
Hardtrees

Serialize and Deserialize Binary Tree

+160
Mediumtrie

Implement Trie (Prefix Tree)

+120
Mediumtrie

Design Add and Search Words Data Structure

+120
Hardtrie

Word Search II

+160
Hardheap

Find Median from Data Stream

+160
Mediumbacktracking

Subsets

+120
Mediumbacktracking

Combination Sum

+120
Mediumbacktracking

Permutations

+120
Mediumbacktracking

Subsets II

+120
Mediumbacktracking

Word Search

+120
Mediumbacktracking

Palindrome Partitioning

+120
Mediumbacktracking

Letter Combinations of a Phone Number

+120
Hardbacktracking

N-Queens

+160
Mediumgraphs

Number of Islands

+120
Mediumgraphs

Clone Graph

+120
Mediumgraphs

Pacific Atlantic Water Flow

+120
Mediumtopological-sort

Course Schedule

+120
Mediumunion-find

Graph Valid Tree

+120
Mediumunion-find

Number of Connected Components

+120
Hardtopological-sort

Alien Dictionary

+160
Easydp-1d

Climbing Stairs

+90
Mediumdp-1d

House Robber

+120
Mediumdp-1d

House Robber II

+120
Mediumdp-2d

Longest Palindromic Substring

+120
Mediumdp-2d

Palindromic Substrings

+120
Mediumdp-1d

Decode Ways

+120
Mediumdp-1d

Coin Change

+120
Mediumdp-1d

Maximum Product Subarray

+120
Mediumdp-1d

Word Break

+120
Mediumdp-1d

Longest Increasing Subsequence

+120
Mediumdp-2d

Unique Paths

+120
Mediumdp-2d

Longest Common Subsequence

+120
Mediumgreedy

Maximum Subarray

+120
Mediumgreedy

Jump Game

+120
Mediumgreedy

Gas Station

+120
Mediumgreedy

Hand of Straights

+120
Mediumgreedy

Merge Triplets to Form Target Triplet

+120
Mediumgreedy

Partition Labels

+120
Mediumintervals

Insert Interval

+120
Mediumintervals

Merge Intervals

+120
Mediumintervals

Non-overlapping Intervals

+120
Easyintervals

Meeting Rooms

+80
Mediumintervals

Meeting Rooms II

+120
Hardintervals

Minimum Interval to Include Each Query

+160
Mediummatrix

Rotate Image

+120
Mediummatrix

Spiral Matrix

+120
Mediummatrix

Set Matrix Zeroes

+120
Easymath-geometry

Happy Number

+80
Easymath-geometry

Plus One

+80
Mediummath-geometry

Pow(x, n)

+120
Mediummath-geometry

Multiply Strings

+120
Mediummath-geometry

Detect Squares

+120
Mediumbit-manipulation

Sum of Two Integers

+120
Easybit-manipulation

Number of 1 Bits

+80
Easybit-manipulation

Counting Bits

+80
Easybit-manipulation

Missing Number

+80
Easybit-manipulation

Reverse Bits

+80