TIPS.md

Tips and Tricks

• Tips and Tricks
  • Calculate Prefix Sum

Calculate Prefix Sum

class Solution {
public:
    vector<int> runningSum(vector<int>& nums) {
        for (int i = 1; i < nums.size(); i++) {
            nums[i] += nums[i-1];
        }
        
        return nums;
    }
};