js冒泡排序

function bubbleSort(arr){for(var i=0;i<arr.length;i++){var flag=true;for(var j=0;j<arr.length-i-1;j++){if(arr[j]>arr[j+1]){var t=arr[j];arr[j]=arr[j+1];arr[j+1]=t;flag=false;}if(flag){break;}}}return arr;}