Continuous Subarray Sum

Explore how to identify whether an integer array has a continuous subarray of at least length two whose sum is divisible by a given integer k. This lesson guides you through understanding the problem, leveraging hash maps for efficient solutions, and practicing implementation in a hands-on coding environment.

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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 $2$ .
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 x is a multiple of k if there exists an integer n such that x = n * k. Note that 0 is always considered a multiple of k.

Constraints:

$1 \leq$ ...