Category: Two Pointer

Teaching Kids Programming: Videos on Data Structures and Algorithms Given the head of a sorted linked list, delete all duplicates such that each element appears only once. Return the …

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. …

Teaching Kids Programming: Videos on Data Structures and Algorithms You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost …

Teaching Kids Programming: Videos on Data Structures and Algorithms You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a 0-indexed integer array nums of length n and an integer target, return the number of pairs (i, j) …