function sort(arr) {
let k = "";
for (let i = 1; i < arr.length; i++) {
for (let j = i; j > 0 && arr[j] < arr[j - 1]; j--) {
k = arr[j];
arr[j] = arr[j - 1];
arr[j - 1] = k;
}
}
return arr;
}
const nums = [2, 4, 1, 6, 5, 3, 7];
console.log(sort(nums));