Tag: hash table
Teaching Kids Programming: Videos on Data Structures and Algorithms Given four lists of integers a, b, c, and d, and an integer target, return the number of unique quadruple …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a list of strings words, group all anagrams together and return the size of the largest grouping. Constraints n …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given an array of integers arr, a lucky integer is an integer which has a frequency in the array equal …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a list of integers nums, return the number of elements x there are such that x + 1 exists …
Given a string s and an integer k, return the number of k-length substrings that occur more than once in s. Constraints n ≤ 100,000 where n is the …