本文实例为大家分享了java字符串反转的具体代码,供大家参考,具体内容如下
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
import java.util.Stack; public class StringReverse { // 使用内置类(StringBuilder或StringBuffer) public static String reverse1(String s) { // StringBuilder strBuilder = new StringBuilder(s); // String ret = strBuilder.reverse().toString(); StringBuffer strBuf = new StringBuffer(s); String ret = strBuf.reverse().toString(); return ret; } // 有左到右 拼接字符串 public static String reverse2(String s) { String ret = "" ; for ( int i = 0 ; i < s.length(); ++i) { ret = s.charAt(i) + ret; } return ret; } // 从右到左 拼接字符串 public static String reverse3(String s) { String ret = "" ; for ( int i = s.length() - 1 ; i >= 0 ; --i) { ret += s.charAt(i); } return ret; } public static String reverse4(String s) { String ret = "" ; char [] charArr = s.toCharArray(); int len = charArr.length; for ( int i = 0 ; i < len / 2 ; ++i) { char tmp = charArr[i]; charArr[i] = charArr[len - 1 - i]; charArr[len - 1 - i] = tmp; } ret = new String(charArr); return ret; } // 使用异或 public static String reverse5(String s) { String ret = "" ; char [] charArr = s.toCharArray(); int begin = 0 , end = charArr.length - 1 ; while (begin < end) { charArr[begin] = ( char ) (charArr[begin] ^ charArr[end]); charArr[end] = ( char ) (charArr[begin] ^ charArr[end]); charArr[begin] = ( char ) (charArr[begin] ^ charArr[end]); begin++; end--; } ret = new String(charArr); return ret; } // 使用栈 public static String reverse6(String s) { String ret = "" ; Stack<Character> stack = new Stack<Character>(); for ( int i = 0 ; i < s.length(); ++i) { stack.push(s.charAt(i)); } while (!stack.isEmpty()) { ret += stack.pop(); } return ret; } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。