Code Challenges

Get better at coding with practice problems.

Coding Challenges

Select a problem, write code, run test cases, and submit your solution.

Showing 15 of 53 problems

Implement the editDistanceSimple method that returns the minimum edit operations needed to convert one string into another. Solved

Implement the longestCommonSubsequenceLength method that returns the length of the longest common subsequence of two strings. Solved

Implement the longestIncreasingSubsequenceLength method that returns the length of the longest strictly increasing subsequence. Solved

Implement the method countPalindromicSubstrings that counts all palindromic substrings. Solved

Implement the method longestIncreasingSubsequence that returns the length of the longest strictly increasing subsequence. Solved

Implement the method coinChangeMinCoins that returns the minimum number of coins needed for an amount. Solved