1
var wordSubsets = function (words1, words2) {
2
  this.count = Array(26).fill(0);
3
  let tmp = Array(26).fill(0);
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  for (let b of words2) {
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    tmp = counter(b);
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    for (let i = 0; i < 26; i++) count[i] = Math.max(count[i], tmp[i]);
7
  }
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  let list = [];
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  for (let a of words1) if (isSub(counter(a))) list.push(a);
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  return list;
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};
12

13
function isSub(tmp) {
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  for (let i = 0; i < 26; i++) if (tmp[i] < this.count[i]) return false;
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  return true;
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}
17

18
function counter(s) {
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  let tmp = Array(26).fill(0);
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  for (let c of s) tmp[c.charCodeAt() - 97]++;
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  return tmp;
22
}