java-案例-拼接字符串案例

/**
 * Author: 明明就会被淘汰
 * Date: 2022/1/22 上午2:12
 * Title: 
 */
public class 拼接字符串案例 {
    public static void main(String[] args) {
        int[] arr = {1, 2, 3};

        String s = arrayToString(arr);
        System.out.println("s:" + s);


    }

    public static String arrayToString(int[] arr) {
        String s = "";
        s += "[";

        for (int i = 0; i < arr.length; i++) {

            if (i == arr.length - 1) {
                s += arr[i];
            } else {

                s += arr[i];
                s += ", ";
            }
        }

        s += "]";
        return s;
    }
}