string-requirement: To stitch the data in the array into a string in the specified format

Package Cn.lianxi;/** Requirement: The data in the array is stitched into a string in the specified format as an example: * int [] arr = {one-way}; * Output Results * "[1, 2, 3]" * Analysis: * 1. Define a string object, except that the content is empty * 2. Stitch a string into a "[" * 3. Iterate over the array to get each element * 4. First, determine if the element is the last * is: Directly stitching elements and] * not: stitching elements and commas and spaces * 5. Output stitched String **/ Public classZifu { Public Static voidMain (string[] args) {int[] arr = {1,2,3}; String s=""; S+="[";  for(inti =0; i<arr.length;i++){            if(i = = arr.length-1) {s+=Arr[i]; S+="]"; }            Else{s+=Arr[i]; S+=", "; }} System. out. println ("The final string is:"+s); }}

string-requirement: To stitch the data in the array into a string in the specified format