Java Array Exercises: Check if a given array contains a subarray with 0 sum

Java Array: Exercise-54 with Solution

Write a Java program to check if a given array contains a subarray with 0 sum.

Example:
Input :
nums1= { 1, 2, -2, 3, 4, 5, 6 }
nums2 = { 1, 2, 3, 4, 5, 6 }
nums3 = { 1, 2, -3, 4, 5, 6 }
Output:
Does the said array contain a subarray with 0 sum: true
Does the said array contain a subarray with 0 sum: false
Does the said array contain a subarray with 0 sum: true

Sample Solution:

Java Code:

import java.util.Set;
import java.util.HashSet;
import java.util.Arrays;

class solution
{
	public static Boolean find_subarray_sum_zero(int[] nums)
	{
		Set<Integer> set = new HashSet<>();
		set.add(0);
		int suba_sum = 0;
		for (int i = 0; i < nums.length; i++)
		{			
			suba_sum += nums[i];

     		if (set.contains(suba_sum)) {
				return true;
			}
		set.add(suba_sum);
		}

		return false;
	}

	public static void main (String[] args)
	{
		int[] nums1= { 1, 2, -2, 3, 4, 5, 6 };
		System.out.println("Original array: "+Arrays.toString(nums1));
		System.out.println("Does the said array contain a subarray with 0 sum: "+find_subarray_sum_zero(nums1));		
		int[] nums2 = { 1, 2, 3, 4, 5, 6 };
		System.out.println("\nOriginal array: "+Arrays.toString(nums2));
		System.out.println("Does the said array contain a subarray with 0 sum: "+find_subarray_sum_zero(nums2));	
        int[] nums3 = { 1, 2, -3, 4, 5, 6 };
		System.out.println("\nOriginal array: "+Arrays.toString(nums3));
		System.out.println("Does the said array contain a subarray with 0 sum: "+find_subarray_sum_zero(nums3));
	}
}

Sample Output:

                                                                              
Original array: [1, 2, -2, 3, 4, 5, 6]
Does the said array contain a subarray with 0 sum: true

Original array: [1, 2, 3, 4, 5, 6]
Does the said array contain a subarray with 0 sum: false

Original array: [1, 2, -3, 4, 5, 6]
Does the said array contain a subarray with 0 sum: true

Flowchart:

Java Code Editor:

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