Solution: A Subarray with a Sum of 0

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:

• $1 \leq$ arr.length $\leq 10^{3}$
• $10^{-3} \leq$ arr[i] $\leq 10^{3}$