数组排序、求最大值、求和
数组排序、求最大值、求和
let arr = [1,4,5,3 let arr1 = arr.sort( a - let arr2 = arr.sort( b - (let i = 0; i < arr.length-1 ;i++ (let j = 0; j<arr.length-1-i; j++ (arr[j]>arr[j+1== arr[j+1+1] = let arr4 = = 0+= = 0+= = 0 (let i = 0; i< arr.length; i+++=
