function test1 (array) { array = array.concat() let length = array.length let temp = array.length while(length > 0) { for (let j = 0; j < length; j++) { if (array[j] > array[j + 1]) { temp = j; [array[j], array[j + 1]] = [array[j + 1], array[j]]; } } length = temp } return array } const array = [4, 7, 867, 65, 91, 6, 1, 100, 11] console.log(test1(array))