Category: algorithms
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a string s, return the number of unique palindromes of length three that are a subsequence of s. Note …
Teaching Kids Programming: Videos on Data Structures and Algorithms There are n teams numbered from 0 to n – 1 in a tournament; each team is also a node …
Teaching Kids Programming: Videos on Data Structures and Algorithms 2923. Find Champion I There are n teams numbered from 0 to n – 1 in a tournament. Given a …
Given a integer n, find all the sum of the number of the digits up to n, for example, given n=5, we return 5, because 1,2,3,4,5 are all 1 …
Teaching Kids Programming: Videos on Data Structures and Algorithms You are given a string s consisting of lowercase English letters, and you are allowed to perform operations on it. …