Tag: hash table
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a string s, return the length of the longest substring between two equal characters, excluding the two characters. If …
Teaching Kids Programming: Videos on Data Structures and Algorithms You are given an integer array arr. You can choose a set of integers and remove all the occurrences of …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given an integer array nums, return the largest integer that only occurs once. If no integer occurs once, return -1. …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a list of integers nums, return the largest integer k where k and -k both exist in nums (they …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a lowercase alphabet string s, return the index of the first recurring character in it. If there are no …
