1480. Running Sum of 1d Array

class Solution {
public:
    vector<int> runningSum(vector<int>& nums) {
        vector<int> ret = nums;
        int total = 0;
        for(int n = 0; n < ret.size(); n++) {
            total = total + ret[n];
            ret[n] = total;
        }
        
        return ret;
    }
};