JAVA array to string

1. Problem

Convert the data of array type in JAVA to string type, and convert an integer array to string. For example, array {1, 2, 3}, the returned string is "[1, 2, 3]", pay attention to the comma The location and quantity.

2. Analysis

The string type in JAVA can realize a character and a number into a string through +=

3. Code

public class ARR {
    
    
    public static void main(String[] args) {
    
    
        int[] arrary = {
    
    12, 19, 1, 25, 99, 52, 3, 67, 23, 15};
        String RET = ToString(arrary);
        System.out.println(RET);


    }
    public static String ToString(int [] arr){
    
    
        String strarr = "[";
        for (int i=0;i<arr.length;i++){
    
    
            strarr += arr[i];

            if (i!=arr.length-1){
    
    
                strarr+=",";
            }

        }
        strarr += "]";
        return strarr;
    }