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Given an integer array nums and an integer k, return true if nums has a continuous subarray of size at least two whose elements sum up to a multiple of k, or false otherwise. 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 a multiple of k.
An integer array nums and an integer k.
Return true if there exists a continuous subarray of size at least two whose sum is a multiple of k; otherwise, return false.
1 <= nums.length <= 10^5, 0 <= nums[i] <= 10^9, -10^9 <= k <= 10^9
Example 1
Input
nums = [23, 2, 4, 6, 7], k = 6
Output
true
Explanation
Because [2, 4] is a continuous subarray of size 2 whose sum is 6, which is a multiple of 6.
Example 2
Input
nums = [23, 2, 6, 4, 7], k = 13
Output
false
Explanation
No continuous subarray of size at least 2 sums to a multiple of 13.