Category: Two Pointer

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a string s, find the length of the longest substring that contains at most 2 distinct characters. Constraints n …

Teaching Kids Programming: Videos on Data Structures and Algorithms You are given a list of integers weights representing peoples’ weights and an integer limit representing the weight limit of …

Teaching Kids Programming: Videos on Data Structures and Algorithms A few days ago, we learned to solve the four sum problem using the Bruteforce Algorithm or Depth First Search …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given an array of numbers and a target, find out if there is any three numbers that sum up to …

Given a string s and an integer k, return the length of the longest substring of s such that the frequency of each character in this substring is greater …