1Day 1Algorithm
[DAY 2] Simple Array Sum
walk_through_me
2019. 10. 2. 18:30
Given an array of integers, find the sum of its elements.
For example, if the array ar=[1, 2, 3], 1 + 2 + 3 = 6, so return 6.
Function Description
Complete the simpleArraySum function in the editor below. It must return the sum of the array elements as an integer.
simpleArraySum has the following parameter(s):
- ar: an array of integers
Simple Array Sum | HackerRank
Calculate the sum of integers in an array.
www.hackerrank.com
소요시간 : 4분
풀이
function simpleArraySum(ar) {
let result = ar.reduce((acc, cur) => { return acc + cur });
return result;
}
1. reduce() 함수를 이용하여 누산함
2. 누산 값을 result 변수에 담아 리턴함
다른 사람의 풀이
function simpleArraySum(ar) {
return ar.reduce((a, b) => a + b)
}
아..! 이렇게 한줄로 리턴했어도 됐는데...😅