SOURCE

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));