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Data Structures for Coding Interviews in Java

Solution: A Subarray with a Sum of 0

Explore how to identify a consecutive subarray with a sum of zero using hash tables. Learn to apply cumulative sum checks and hashing strategies to solve this common interview problem efficiently in Java with O(n) time.

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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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