1const selectionSort = array => {
2  const arr = Array.from(array); // avoid side effects
3  for (let i = 0; i < arr.length - 1; i++) {
4    let minPos = i;
5    for (let j = i + 1; j < arr.length; j++) {
6      if (arr[j] < arr[minPos]) {
7        minPos = j;
8      }
9    }
10    if (i !== minPos) {
11      [arr[i], arr[minPos]] = [arr[minPos], arr[i]];
12    }
13  }
14  return arr;
15};
16
17console.log(selectionSort([4, 9, 2, 1, 5]));
18

1let selectionSort = (arr) => {
2    let len = arr.length;
3    for (let i = 0; i < len; i++) {
4        let min = i;
5        for (let j = i + 1; j < len; j++) {
6            if (arr[min] > arr[j]) {
7                min = j;
8            }
9        }
10        if (min !== i) {
11            let tmp = arr[i];
12            arr[i] = arr[min];
13            arr[min] = tmp;
14        }
15    }
16    return arr;
17}