32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
#include <bits/stdc++.h>
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using namespace std;
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const char *rev = "A 3 HILJM O 2TUVWXY51SE Z 8 ";
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const char *msg[] = {"not a palindrome",
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"a regular palindrome",
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"a mirrored string",
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"a mirrored palindrome"};
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char r(char ch) {
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if (isalpha(ch)) return rev[ch - 'A'];//如果是字符，那么计算出它所在的索引号，比如是A，那么索引号是0
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else return rev[ch - '0' + 25]; //如果是数字，那么-'0'就是0，+25就是数字对应的索引号
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}
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int main() {
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ios::sync_with_stdio(false); //读入输出优化的强迫症
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char s[30];
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while (scanf("%s", s) == 1) {
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int len = strlen(s);
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int p = 1, m = 1;
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for (int i = 0; i < (len + 1) / 2; i++) {
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//折半去看
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if (s[i] != s[len - 1 - i]) p = 0;
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if (r(s[i]) != s[len - 1 - i]) m = 0;
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}
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//这个msg的数组索引用的好，有点二进制的意思~
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printf("%s-- is %s.\n\n", s, msg[m * 2 + p]);
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}
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return 0;
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} |