Medium
Quiz
#523 Continuous Subarray Sum
APPROACH
Given an integer array nums and a positive integer k, return true if nums contains a contiguous subarray of length at least two whose elements sum to a multiple of k, or false otherwise.
Notes:
- A subarray is a contiguous portion of the array.
- 0 is considered a multiple of every integer k.
Example 1:
Input: nums = [23,2,4,6,7], k = 6
Output: true
Explanation: [2, 4] is a continuous subarray of size 2 whose elements sum up to 6.
Example 2:
Input: nums = [23,2,6,4,7], k = 6
Output: true
Explanation: [23, 2, 6, 4, 7] is an continuous subarray of size 5 whose elements sum up to 42.
42 is a multiple of 6 because 42 = 7 * 6 and 7 is an integer.
Example 3:
Input: nums = [23,2,6,4,7], k = 13
Output: false
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