bubbleSort(Array) {
let len = Array.length;
for (let i = 0; i < len; i++) { //you can also use "for in", so you don't need the variable "len"
for (let j = 0; j < len; j++) {
if (Array[j] > Array[j + 1]) {
let tmp = Array[j];
Array[j] = Array[j + 1];
Array[j + 1] = tmp;
}
}
}
return Array;
};