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 55 matching problems in NeetCode 250.

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Array141Dynamic Programming55String53

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Title	Difficulty	Topics
300. Longest Increasing Subsequence Open source	Medium	ArrayBinary SearchDynamic Programming+1 more
309. Best Time to Buy and Sell Stock with Cooldown Open source	Medium	ArrayDynamic Programming
312. Burst Balloons Open source	Hard	ArrayDynamic Programming
322. Coin Change Open source	Medium	ArrayDynamic ProgrammingBreadth-First Search+2 more
329. Longest Increasing Path in a Matrix Open source	Hard	ArrayDynamic ProgrammingDepth-First Search+6 more
337. House Robber III Open source	Medium	Dynamic ProgrammingTreeDepth-First Search+2 more
338. Counting Bits Open source	Easy	Dynamic ProgrammingBit Manipulation
343. Integer Break Open source	Medium	MathDynamic Programming
377. Combination Sum IV Open source	Medium	ArrayDynamic Programming
410. Split Array Largest Sum Open source	Hard	ArrayBinary SearchDynamic Programming+2 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
473. Matchsticks to Square Open source	Medium	ArrayDynamic ProgrammingBacktracking+2 more
494. Target Sum Open source	Medium	ArrayDynamic ProgrammingBacktracking+2 more
518. Coin Change II Open source	Medium	ArrayDynamic ProgrammingKnapsack Problem+1 more
647. Palindromic Substrings Open source	Medium	Two PointersStringDynamic Programming
678. Valid Parenthesis String Open source	Medium	StringDynamic ProgrammingStack+2 more
698. Partition to K Equal Sum Subsets Open source	Medium	ArrayDynamic ProgrammingBacktracking+3 more
746. Min Cost Climbing Stairs Open source	Easy	ArrayDynamic Programming
787. Cheapest Flights Within K Stops Open source	Medium	Dynamic ProgrammingDepth-First SearchBreadth-First Search+3 more
877. Stone Game Open source	Medium	ArrayMathDynamic Programming+3 more
918. Maximum Sum Circular Subarray Open source	Medium	ArrayDivide and ConquerDynamic Programming+2 more
978. Longest Turbulent Subarray Open source	Medium	ArrayDynamic ProgrammingSliding Window
1049. Last Stone Weight II Open source	Medium	ArrayDynamic ProgrammingKnapsack Problem+1 more
1137. N-th Tribonacci Number Open source	Easy	MathDynamic ProgrammingMemoization