Java练习之使用StringBuilder
1 package string.demo;2
3 /*
4 * 将数组变为字符串输出
5 */
6 public class StringBuilderTest
7 {
8
9 /**
10 * @param args
11 */
12 public static void main(String[] args)
13 {
14 int[] arr = {2, 3, 41, 4};
15 String str = arrayToString_2(arr);
16 System.out.println(str);
17
18 }
19
20 private static String arrayToString_2(int[] arr)
21 {
22 StringBuilder sb = new StringBuilder("[");
23 for (int i = 0; i < arr.length; i++)
24 {
25 if (i != arr.length - 1)
26 sb.append(arr[i] + ", ");
27 else
28 sb.append(arr[i] + "]");
29 }
30 return sb.toString();
31 }
32
33 public static String arrayToString_1(int[] arr)
34 {
35 String str = "[";
36 for (int i = 0; i < arr.length; i++)
37 {
38 if (i != arr.length - 1)
39 str += arr[i] + ", ";
40 else
41 str += arr[i] + "]";
42 }
43 return str;
44 }
45 }
以上是 Java练习之使用StringBuilder 的全部内容, 来源链接: utcz.com/z/392012.html