523. Continuous Subarray Sum

Given an integer array nums and an integer k, return true if nums has a good subarray or false otherwise. A good subarray is a subarray where: - its length is at least two, and - the sum of the elements of the subarray is a multiple of k. Note that: - A subarray is a contiguous part of the array. - An integer x is a multiple of k if there exists an integer n such that x = n * k. 0 is always