UVA 401 - Palindromes

Posted 2020-06-30

题意：输入字符串，判断回文和镜像

分析：打表，比对，标志变量判断

注释：水题，注意细节，注意输出格式！！！！！！！！！！！！！！！

 1 //#define LOCAL
 2 #include"cstdio"
 3 #include"cstring"
 4 #include"cctype"
 5 using namespace std;
 6 const int maxn=100;
 7 char s1[maxn],s[]="A   3  HIL JM O   2TUVWXY51SE Z  8 ";
 8 bool pal,mir;
 9 char r(char c)
10 {
11     if(isalpha(c)) return s[c-‘A‘];
12     return s[c-‘0‘+25];
13 }
14 void print()
15 {
16     if(pal&&mir) printf("%s -- is a mirrored palindrome.\n\n",s1);
17     if(!pal&&mir) printf("%s -- is a mirrored string.\n\n",s1);
18     if(pal&&!mir) printf("%s -- is a regular palindrome.\n\n",s1);
19     if(!pal&&!mir) printf("%s -- is not a palindrome.\n\n",s1);
20 }
21 int main()
22 {
23     #ifdef LOCAL
24     freopen("in.txt","r",stdin);
25     freopen("out.txt","w",stdout);
26     #endif // LOCAL
27     while(scanf("%s",s1)!=EOF)
28     {
29         int len=strlen(s1);pal=true;mir=true;
30         for(int i=0;i<(len+1)/2;i++)
31         {
32             if(s1[i]!=s1[len-1-i]) pal=false;
33             if(r(s1[i])!=s1[len-1-i]) mir=false;
34         }
35         print();
36     }
37     return 0;
38 }