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 contiguous subarray of length at least 2 whose sum is a multiple of `k`.
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 contiguous subarray of length at least 2 whose sum is a multiple of `k`.