Given two integer arrays X[] and Y[] of size m and n, respectively, write a program to find the intersection of these two arrays. The intersection of two arrays is a list of distinct numbers which are present in both arrays. The numbers in the intersection can be in any order.

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Given an array X[] of n integer elements, write a program to find the length of the longest subarray with a sum equal to 0. In general, for all j > i, find **max (j - i + 1)** among all subarray with zero-sum. Note: the length of a subarray starting from index i and ending at index j = j - i + 1.

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