C#: Find the length of the largest subarray with 0 Sum

Difficulty Level: MEDIUM

Problem Statement:

You are given an array arr[] of length N, find the length of the longest sub-array with a sum equal to 0.

Input:

arr[] = { 23, -1, 1, -4, 2, 7, 19, 43 };

Output:

length of the longest 0 sum subarray is 2