running sum of 1d array code example

Example 1: Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]). Return the running sum of nums.

def running_sum(nums):
    sum = 0
    result = []

    for num in nums:
        sum += num
        result.append(sum)

    return result

Example 2: running sum of array

Input: nums = [1,1,1,1,1]
Output: [1,2,3,4,5]
Explanation: Running sum is obtained as follows: [1, 1+1, 1+1+1, 1+1+1+1, 1+1+1+1+1].