Merge Triplets to Form Target Triplet LeetCode solution in JavaScript

1
var mergeTriplets = function (triplets, target) {
2
  let fst = false,
3
    snd = false,
4
    thrd = false;
5

6
  const [t1, t2, t3] = target;
7

8
  for (let i = 0; i < triplets.length; i++) {
9
    const [a, b, c] = triplets[i];
10

11
    if (a === t1 && b <= t2 && c <= t3) fst = true;
12

13
    if (b === t2 && a <= t1 && c <= t3) snd = true;
14

15
    if (c === t3 && a <= t1 && b <= t2) thrd = true;
16

17
    if (fst && snd && thrd) return true;
18
  }
19
  return false;
20
};