将字符串反转，但单词不倒置。
Right here waiting for you! -> you! for waiting here Right
代码1：
1 //将字符串反转，但单词不倒置。
2
3 #include<stdio.h>
4 #include<string.h>
5
6 void reverse(char *s)
7 {
8 char data[255][255];//将s中的空格和非空格子串进行存储
9 int row = 0,column = 0;
10 int i,j,k;
11
12 for(i=0;s[i];)
13 {
14 data[row][column] = s[i];
15 column++;
16
17 //找到了空格子串的开头
18 if(s[i] == ' ')
19 {
20 i++;
21 if(s[i] == ' ')
22 {
23 do
24 {
25 data[row][column++] = s[i++];
26 }while(s[i] == ' ');
27
28 data[row++][column] = '\0';
29 column = 0;
30 }
31 else
32 {
33 data[row++][column] = '\0';
34 column = 0;
35 }
36 }
37
38 //找到了非空格子串的开头
39 else if(s[i] != ' ')
40 {
41 i++;
42 if(s[i] != ' ')
43 {
44 do
45 {
46 data[row][column++] = s[i++];
47 }while(s[i] != ' ' && s[i]);//注意非空格字符还包括字符串结束符。
48
49 data[row++][column] = '\0';
50 column = 0;
51 }
52 else
53 {
54 data[row++][column] = '\0';
55 column = 0;
56 }
57 }
58 }
59
60 //将data[][]里面的子串存放于s中。
61 k = 0;
62 for(i=row-1;i>=0;i--)
63 {
64 for(j=0;data[i][j]!='\0';j++)
65 {
66 s[k++] = data[i][j];
67 }
68 }
69 s[k] = '\0';
70 }
71
72 int main()
73 {
74 char s[255];
75 gets(s);
76 reverse(s);
77 puts(s);
78 }
代码2：
1 //将字符串反转，但单词不倒置。Right here waiting for you! -> you! for waiting here Right
2 #define _CRT_SECURE_NO_WARNINGS
3 #include <stdio.h>
4 #include <string.h>
5
6 int main()
7 {
8 char str[255];
9 char result[255];
10 int length;
11 int i,j,k = 0;
12 int wordLen = 0;
13
14 gets(str);
15 length = strlen(str);
16
17 for (i = length-1; i >= 0; i--)
18 {
19 if (str[i] == ' ')
20 {
21 if (wordLen != 0)
22 {
23 for (j = i + 1; j <= i + wordLen; j++)
24 {
25 result[k++] = str[j];
26 }
27 }
28 result[k++] = ' ';
29 wordLen = 0;
30 }
31 else
32 {
33 wordLen++;
34 }
35 }
36 if (wordLen != 0)
37 {
38 for (j = 0; j < wordLen; j++)
39 {
40 result[k++] = str[j];
41 }
42 }
43 result[k] = '\0';
44 printf("%s", result);
45 return 0;
46 }
