# 冒泡排序 ```javascript function bubbleSort(arr){ let length = arr.length; for(let i = length;i>0;i--){ for(let j=0;j<i;j++){ if(arr[j]>arr[i]){ [arr[j],arr[i]] = [arr[i],arr[j]] } } } return arr; } const a = [1, 2, 6, 3, 8]; console.log(bubbleSort(a)); ```