日志
字符串中单词反转
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#include <stdio.h>
//求字符串长度
int strlen(char *s)
...{
int i;
for(i=0;s!='\0';i++)
;
return i;
}
//反转字符串的某一断子串
void Reverse(char *s,int ben,int end)
...{
int len=end-ben+1;
for(int i=0;i<len/2;i++)
...{
char c=s[ben+i];
s[ben+i]=s[ben+len-i-1];
s[ben+len-i-1]=c;
}
}
void ReverseWord(char *s)
...{
//先将整个字符串反转
Reverse(s,0,strlen(s)-1);
bool isword=false;
int i=0;
int j=0;
int k=0;
//分离单词
while (s[k] != '\0')
...{
while(s[k] == ' ')
k++;
while ((s[k] != '\0') && (s[k] != ' '))
...{
i++,k++;
}
if (i == 0)
return ;
Reverse(s, k - i, k - 1);
i = 0;
}
}
int main()
...{
char s[]="I love you";
printf("Before Reverse:%s\n",s);
ReverseWord(s);
printf("After Reverse:%s\n",s);
return 0;
}
//求字符串长度int strlen(char *s)...{ int i; for(i=0;s!='\0';i++) ; return i;}//反转字符串的某一断子串void Reverse(char *s,int ben,int end) ...{ int len=end-ben+1; for(int i=0;i<len/2;i++) ...{ char c=s[ben+i]; s[ben+i]=s[ben+len-i-1]; s[ben+len-i-1]=c; }}void ReverseWord(char *s)...{ //先将整个字符串反转 Reverse(s,0,strlen(s)-1); bool isword=false; int i=0; int j=0; int k=0; //分离单词 while (s[k] != '\0') ...{ while(s[k] == ' ') k++; while ((s[k] != '\0') && (s[k] != ' ')) ...{ i++,k++; } if (i == 0) return ; Reverse(s, k - i, k - 1); i = 0; }}int main()...{ char s[]="I love you"; printf("Before Reverse:%s\n",s); ReverseWord(s); printf("After Reverse:%s\n",s); return 0;}
