RunSum1d.java

public class RunSum1d {
 public int[] runningSum(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;
 }
 public static void main(String[] args){
 int[] array = {1,2,3,4};
 RunSum1d obj = new RunSum1d();
 int[] a = obj.runningSum(array);
 for(int i = 0; i < a.length; i++){
 System.out.print(a[i] + " ");
 }
 }
}