Palindromes //简单字符串-蒲公英云

Palindromes //简单字符串

你的名字 2022-08-06 00:17 202阅读 0赞

#include <stdio.h>
#include <string.h>
int main()
{
    int i, mid, len;
    char stdc[50]= {'A',0,0,0,'3',0,0,'H','I','L',0,'J','M',0,'O',0,0,0,'2','T','U','V','W','X','Y','5','1','S','E',0,'Z',0,0,'8',0};<span style="white-space:pre">    </span>
    char ch[30];
    bool isr, ism;
    while( scanf("%s", ch)!=-1 )
    {
        isr = ism = true;
        len = strlen(ch);
        mid = len / 2 + (len%2==0? 0:1);
        for(i=0; i<mid; i++)
        {
            if(ch[i] != ch[len-i-1])
            {
                isr = false;
                if(ch[i]>='A' && ch[i]<='Z')
                {
                    if(ch[len-i-1] != stdc[ch[i]-'A'] )
                        ism = false;
                }
                else if(ch[i]>='0' && ch[i]<='9')
                {
                    if(ch[len-i-1] != stdc[ch[i]-'0'+25] )
                        ism = false;
                }
            }
            else
            {
                if(ch[i]>='A' && ch[i]<='Z')
                {
                    if(ch[len-i-1] != stdc[ch[i]-'A'] )
                        ism = false;
                }
                else if(ch[i]>='0' && ch[i]<='9')
                {
                    if(ch[len-i-1] != stdc[ch[i]-'0'+25] )
                        ism = false;
                }
            }
            if(!isr && !ism)    break;
        }
    printf("%s", ch);
    if(isr && ism)
        printf(" -- is a mirrored palindrome.\n");
    else if(isr)
        printf(" -- is a regular palindrome.\n");
    else if(ism)
        printf(" -- is a mirrored string.\n");
    else
        printf(" -- is not a palindrome.\n");
    printf("\n");
    }
    return 0;
}