import java.util.Arrays;
import java.util.Scanner;
public class LeetCode_RunningSum {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int[] arr = {1,2,3,4};
System.out.println(Arrays.toString(out(arr)));
}
static int[] out(int[] nums){
int sum = 0;
int[] arr = new int[nums.length];
for (int i = 0; i < nums.length; i++){
sum += nums[i];
arr[i] = sum;
}
return arr;
}
}