LeetCode: Check If String Is a Prefix of Array Solution

Approach

On each concatenation of words, compare with s

Implementation

1var isPrefixString = function (s, words) {
2  let res = false
3
4  words.reduce((acc, word) => {
5    acc += word
6    if (acc === s) res = true
7    return acc
8  }, "")
9
10  return res
11}