MaxInterview - use recursion to create a countdown

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1function countdown(n){
2  if (n < 1) {
3    return [];
4  } else {
5    const arr = countdown(n - 1);
6    arr.unshift(n);
7    return arr;
8  }
9}
10console.log(countdown(5)); // [5, 4, 3, 2, 1]

1function countdown(n){
2   return n < 1 ? [] : [n].concat(countdown(n - 1));
3}
4

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