func runningSum(nums []int) []int {
	var sum int
	var runningSum []int = make([]int, len(nums))

	for i := 0; i < len(nums); i++ {
		sum = sum + nums[i]
		runningSum[i] = sum
	}

	return runningSum
}

class Solution {
    public int[] runningSum(int[] nums) {
        int sum = 0;
        int[] runningSum = new int[nums.length];

        for (int i = 0; i < nums.length; i++)
        {
            sum = sum + nums[i];
            runningSum[i] = sum;
        }

        return runningSum;
    }
}