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Data Structures for Coding Interviews in JavaScript

Solution: A Subarray with a Sum of 0

Explore how to determine if a JavaScript array contains a consecutive subarray whose sum equals zero. Learn to use hashing to track cumulative sums, identify key conditions, and implement an efficient O(n) solution for technical interviews.

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Statement

Given a list containing both positive and negative integers, determine if there exists a sublist of consecutive elements whose elements sum to zero. Return TRUE if such a sublist exists; otherwise, return FALSE.

Constraints:

  • 1≤1 \leq arr.length ≤103\leq 10^{3}
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