Solution: Continuous Subarray Sum
Explore how to identify continuous subarrays with sums divisible by k by leveraging hash maps and cumulative sum remainders. This lesson teaches you to efficiently solve the continuous subarray sum problem by tracking remainders and subarray lengths, improving your coding interview problem-solving skills with practical implementation and complexity analysis.
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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: ...