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Problems Lists New Problem Interviews Ranking

Problems | Code Master

Problems Lists New Problem Interviews Ranking

Community challenges

The problem library

Pick a challenge, write your solution and let the AI judge it in real time.

11 problems

Easy

Count Pairs with Difference At Most K

Two PointersSliding Window+1

Code MasterSolve

Hard

Minimum Partition Count with Length and Range Constraints

Dynamic ProgrammingSliding Window+1

Code MasterSolve

Medium

Find All Anagrams in a String

Sliding WindowHash Table+1

Code Master50.0% acceptedSolve

Hard

Substring with Concatenation of All Words

Hash TableString+1

Code MasterSolve

Medium

Count Distinct Elements in Subarray

Sliding WindowHash Table+1

Code MasterSolve

Medium

Distinct Elements in Window

Sliding WindowHash Table+1

Code MasterSolve

Medium

Longest Substring with At Most K Distinct Characters

Sliding WindowHash Table+2

Code MasterSolve

Medium

Minimum Length Contiguous Subarray Summing to Target

Sliding WindowTwo Pointers+1

Code MasterSolve

Medium

Find All Substring Concatenations

Sliding WindowHash Table+1

Code MasterSolve

Easy

Closest Fixed Window Sum

Sliding WindowArray

Code MasterSolve

Hard

Maximum Constrained Subarray Sum under Arithmetic Range Updates

Prefix SumSliding Window+1

Code MasterSolve

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