Juni_DEV

Sparse Arrays | HackerRank Determine the number of times a string has previously appeared. www.hackerrank.com 주어진 문제 더보기 There is a collection of input strings and a collection of query strings. For each query string, determine how many times it occurs in the list of input strings. Return an array of the results. Example stringList = ['ab','ab','abc'] queries = ['ab','abc','bc'] There are 2 inst..