Problem Library

Master these coding challenges to ace your next technical interview. Handpicked problems with personalized spaced repetition.

All tracks Blind 75 NeetCode 150 NeetCode 250 Striver A to Z SDE Sheet

Showing 26-50 of 53 matching problems in Striver A to Z.

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All topics 0-1 Knapsack Array Backtracking Bidirectional Search Binary Search Binary Search Tree Binary Tree Bit Manipulation Boyer–Moore Majority Vote Algorithm Breadth-First Search Combinatorics Counting Depth-First Search Directed Acyclic Graph Divide and Conquer DP on Trees Dynamic Programming Floyd's Cycle Finding Algorithm

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Array34Dynamic Programming15Depth-First Search11

These are the topics showing up most often in your current queue.

Title	Difficulty	Topics
122. Best Time to Buy and Sell Stock II Open source	Medium	ArrayDynamic ProgrammingGreedy
127. Word Ladder Open source	Hard	Hash TableStringBreadth-First Search+1 more
128. Longest Consecutive Sequence Open source	Medium	ArrayHash TableUnion-Find
133. Clone Graph Open source	Medium	Hash TableDepth-First SearchBreadth-First Search+1 more
141. Linked List Cycle Open source	Easy	Hash TableLinked ListTwo Pointers+1 more
152. Maximum Product Subarray Open source	Medium	ArrayDynamic Programming
153. Find Minimum in Rotated Sorted Array Open source	Medium	ArrayBinary Search
167. Two Sum II - Input Array Is Sorted Open source	Medium	ArrayTwo PointersBinary Search
169. Majority Element Open source	Easy	ArrayHash TableDivide and Conquer+3 more
198. House Robber Open source	Medium	ArrayDynamic Programming
199. Binary Tree Right Side View Open source	Medium	TreeDepth-First SearchBreadth-First Search+1 more
200. Number of Islands Open source	Medium	ArrayDepth-First SearchBreadth-First Search+2 more
206. Reverse Linked List Open source	Easy	Linked ListRecursion
207. Course Schedule Open source	Medium	Depth-First SearchBreadth-First SearchGraph Theory+2 more
210. Course Schedule II Open source	Medium	Depth-First SearchBreadth-First SearchGraph Theory+1 more
213. House Robber II Open source	Medium	ArrayDynamic Programming
229. Majority Element II Open source	Medium	ArrayHash TableSorting+2 more
238. Product of Array Except Self Open source	Medium	ArrayPrefix Sum
287. Find the Duplicate Number Open source	Medium	ArrayTwo PointersBinary Search+3 more
300. Longest Increasing Subsequence Open source	Medium	ArrayBinary SearchDynamic Programming+1 more
416. Partition Equal Subset Sum Open source	Medium	ArrayDynamic ProgrammingKnapsack Problem+1 more
435. Non-overlapping Intervals Open source	Medium	ArrayDynamic ProgrammingGreedy+1 more
543. Diameter of Binary Tree Open source	Easy	TreeDepth-First SearchBinary Tree+1 more
560. Subarray Sum Equals K Open source	Medium	ArrayHash TablePrefix Sum
733. Flood Fill Open source	Easy	ArrayDepth-First SearchBreadth-First Search+1 more