sum_of_array.java

//{ Driver Code Starts
// Initial Template for Java

import java.io.*;
import java.util.*;

class Main {
    // Driver code
    public static void main(String[] args) throws Exception {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in));
        int t = Integer.parseInt(br.readLine().trim());
        while (t-- > 0) {
            int n = Integer.parseInt(br.readLine().trim());
            String[] str = br.readLine().trim().split(" ");
            int[] arr = new int[n];
            for (int i = 0; i < n; i++) {
                arr[i] = Integer.parseInt(str[i]);
            }

            int ans = new Solution().sum(arr, n);

            System.out.println(ans);
        }
    }
}
// } Driver Code Ends


// User function Template for Java

class Solution {
    int sum(int arr[], int n) {
        // code here
        int s=0;
        for(int i=0;i<n;i++)
        {
            s=s+arr[i];
        }
        return s;
    }
}