把一个字符串中的大写字母放到后面,小写字母放到前面,并且相对位置不变

时间:2021-06-03 10:55:05
 


/*°ÑÒ»¸ö×Ö·û´®µÄ´óд×Öĸ·Åµ½×Ö·û´®µÄºóÃ棬¸÷¸ö×Ö·ûµÄÏà¶ÔλÖò»±ä
 *
 */
 
 
#include <stdio.h>
#include <string.h>
 
int main()
{
    char buf[]= "WqqQaABbbCccccc`1233XccYccDdE";
    char tem;
    int pre, end,length,i;
    int flag =0;
    length = strlen(buf);
    end = length -1;
    pre = end;
    while(1)
    {
        if( (pre < 0) )
            break;
        if( (buf[end] >= 'A') && (buf[end] <= 'Z') )
        {
            end--;
            if( pre >= end )
                pre = end -1;
            continue ;
        }
        //while((pre >= 0) && (buf[pre] >= 'a') && ( buf[pre] <= 'z') )
        while((pre >= 0) && ((buf[pre] < 'A')|| ( buf[pre] > 'Z')) )
        {
            pre--;
        }

        if( (pre >= 0) && (buf[pre] >= 'A') && (buf[pre] <= 'Z') )
        {
            if( pre < end )
            {
                tem = buf[pre];
                for( i = pre+1; i<=end; i++ )
                {
                     buf[i-1] = buf[i];
                }
                buf[end] = tem ;
                end--;
                pre--;
            }
        }
    }// while
    printf("====%s\n", buf);
}