Running Sum of 1D Array

Easy
109
4
67.7% Acceptance

In this lab, you will create a function to compute the running sum of a given 1D array. You’ll be given an input array nums. The running sum of this array is defined as runningSum[i] = sum(nums[0]...nums[i]). Your task is to write a function that will return the running sum of nums.

Examples

  • Input: nums = [1, 2, 3, 4] Output: [1, 3, 6, 10] Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4].

  • 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].

  • Input: nums = [3, 1, 2, 10, 1] Output: [3, 4, 6, 16, 17]

Constraints

  • 1 <= nums.length <= 1000
  • -10^6 <= nums[i] <= 10^6

Challenges

  1. Implement the runningSum function to calculate the running sum of the given 1D array nums. Export this function using ESM export.

  2. Add an edge case check to your function to handle the case when the input nums array is empty. If the input array is empty, your function should return an empty array. Export this updated function using ESM export.

Evaluation Script

Make sure to export the runningSum function from your solution as it will be imported and tested for correctness in the evaluation script.

Initial File System for User

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var runningSum = function(nums) {
    
};
{
    "name": "codedamn-lab",
    "type": "module"
}
tabs: ['index.js']
terminals: ['yarn install']

NOTE: Make sure you're default exporting the function ES Modules