LeetCode: Running Sum Of 1d Array Solution
AccumulateApproach
Either mutate array by accumulate sum or calculate prefix sum
Implementation
1// approach 1: mutate the array2var runningSum = function (nums) {3 for (let i = 1; i < nums.length; i++) {4 nums[i] += nums[i - 1]5 }6 return nums7}89// approach 2: prefix sum10var runningSum = function (nums) {11 const prefixSums = []12 let sum = 013 for (const num of nums) {14 sum += num15 prefixSums.push(sum)16 }17 return prefixSums18}
References
Comments
Loading comments...
Tags
leetcode
array
Apply and earn a $2,500 bonus once you're hired on your first job!
Clients from the Fortune 500 to Silicon Valley startups
Choose your own rate, get paid on time
From hourly, part-time, to full-time positions
Flexible remote working environment
A lot of open JavaScript jobs!!
Fact corner: Referred talent are 5x more likely to pass the Toptal screening process than the average applicant.
Still hesitate? Read HoningJS author's guide on dealing with Toptal interview process.
Next Post
Previous Post
LeetCode: Richest Customer Wealth
Jan 30, 2021