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concat_string.java
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46 lines (39 loc) · 1.31 KB
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/*
* @由于个人水平有限, 难免有些错误, 还请指点:
* @Author: cpu_code
* @Date: 2020-09-12 21:26:36
* @LastEditTime: 2020-09-12 21:43:10
* @FilePath: \java\javaAPI\String\concat_string.java
* @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
* @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
* @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
* @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
*/
package javaAPI.String;
public class concat_string {
public static void main(String[] args){
//定义一个int类型的数组
int[] arr = {1, 2, 3};
//调用方法
String s = arrayToString(arr);
//输出结果
System.out.println("s =" + s);
}
// 写方法实现把数组中的元素按照指定的格式拼接成一个字符串
public static String arrayToString(int[] arr){
// 创建字符串s
String s = new String("[");
// 遍历数组，并拼接字符串
for(int i = 0; i < arr.length; i++){
if(i == arr.length -1){
s = s.concat(arr[i] + "]");
} else {
s = s.concat(arr[i] + "#");
}
}
return s;
}
}
/*
s =[1#2#3]
*/