Solution: Continuous Subarray Sum
Explore how to solve the continuous subarray sum problem by leveraging hash maps to track cumulative sum remainders. Understand how matching remainders indicate subarrays with sums divisible by k. This lesson helps you implement an efficient O(n) time and space algorithm to identify qualifying subarrays when given an integer array and a target k.
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Statement
Given an integer array nums and an integer k, determine if nums contains a good subarray. Return true if such a subarray exists; otherwise, return false.
A subarray of nums is considered good if:
Its length is at least
. The sum of its elements is a multiple of
k.
Notes:
A subarray is defined as a contiguous sequence of elements within an array.
An integer
xis a multiple ofkif there exists an integernsuch thatx = n * k. Note that0is always considered a multiple ofk.
Constraints: ...