js冒泡排序

let arr = [12,15,44,1111,5,9,45,0,-1]

for(let i =0;i<arr.length-1;i++) {

for(let j=0;j<arr.length-i;j++) {

if(arr[j-1]>arr[j]) {

let sub = arr[j-1]

arr[j-1] = arr[j]

arr[j] = sub

}

}

}

console.log(arr)