Running Sum of 1d Array

class Solution {
    public int[] runningSum(int[] nums) {
        int[] dp = new int[nums.length+1];
        int[] res = new int[nums.length];
        for(int i = 0; i<nums.length; i++){
            dp[i+1] = dp[i] + nums[i];
        }
        for(int i = 1; i<dp.length; i++){
            res[i-1] = dp[i];
        }
        return res;
    }
}