uva 401 Palindromes
来源:互联网 发布:韩顺平js 编辑:程序博客网 时间:2024/05/22 00:27
http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=342
Palindromes
A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string "ABCDEDCBA" is a palindrome because it is the same when the string is read from left to right as when the string is read from right to left.
A mirrored string is a string for which when each of the elements of the string is changed to its reverse (if it has a reverse) and the string is read backwards the result is the same as the original string. For example, the string "3AIAE" is a mirrored string because "A" and "I" are their own reverses, and "3" and "E"are each others' reverses.
A mirrored palindrome is a string that meets the criteria of a regular palindrome and the criteria of a mirrored string. The string "ATOYOTA" is a mirrored palindrome because if the string is read backwards, the string is the same as the original and because if each of the characters is replaced by its reverse and the result is read backwards, the result is the same as the original string. Of course, "A", "T", "O", and "Y"are all their own reverses.
A list of all valid characters and their reverses is as follows.
Note that O (zero) and 0 (the letter) are considered the same character and therefore ONLY the letter "0" is a valid character.
Input
Input consists of strings (one per line) each of which will consist of one to twenty valid characters. There will be no invalid characters in any of the strings. Your program should read to the end of file.Output
For each input string, you should print the string starting in column 1 immediately followed by exactly one of the following strings.Note that the output line is to include the -'s and spacing exactly as shown in the table above and demonstrated in the Sample Output below.
In addition, after each output line, you must print an empty line.
Sample Input
NOTAPALINDROME ISAPALINILAPASI 2A3MEAS ATOYOTA
Sample Output
NOTAPALINDROME -- is not a palindrome. ISAPALINILAPASI -- is a regular palindrome. 2A3MEAS -- is a mirrored string. ATOYOTA -- is a mirrored palindrome.
Miguel Revilla 2001-04-16
本题很容易看懂懂,条件有点恶心,请注意在判断的回文串的时候,注意区分字母‘O’与数字‘0’的等价关系,在处理时,先把‘0’转化成‘O'!而在判断是否mirrored string的时候,把情况分成两类转化,数字,与字母!最后注意每个样例后面有换行!!以后是AC代码:#include <iostream>#include <cstdio>#include <string>#include <cstring>#include <cctype>using namespace std;char character[]="A 3 HIL JM O 2TUVWXY5";char digits[]="1SE Z 8 ";int palindrome(char str[]){ int i , len; len = strlen(str); for(i = 0;i < len;i++) if(str[i]!=str[len-i-1])return 0; return 1;}int mirror(char str[]){ int i , len; len = strlen(str); for(i = 0;i < len; i++) { if(isalpha(str[i])&&str[len - 1 - i]!=character[str[i]-'A']) return 0; if(isdigit(str[i])&&str[len - 1 - i]!=digits[str[i]-'1']) return 0; } return 1;}int main(){ int i ,flag1,flag2; char str[100]; while((fgets(str,100,stdin) != NULL)) { str[strlen(str) - 1] = 0;//注意把换行去掉。 for(i=0;i< strlen(str);i++) if(str[i]=='0')str[i]='O'; flag1 = palindrome(str); flag2 = mirror(str); if(flag1&&flag2) { printf("%s -- is a mirrored palindrome.\n",str); printf("\n"); continue; } if(flag2) { printf("%s -- is a mirrored string.\n",str); printf("\n"); continue; } if(flag1) { printf("%s -- is a regular palindrome.\n",str); printf("\n"); continue; } printf("%s -- is not a palindrome.\n",str); printf("\n"); } return 0;}
- UVa 401 Palindromes
- UVa OJ 401-Palindromes
- UVa:401 - Palindromes
- uva 401 Palindromes //字符串
- uva 401 - Palindromes
- UVa 401 - Palindromes
- UVa 401 - Palindromes
- UVa 401 - Palindromes
- uva-401 - Palindromes
- UVa 401 Palindromes
- uva 401 Palindromes
- uva 401 Palindromes
- UVA 401 - Palindromes
- UVa 401 - Palindromes
- UVA 题目401 - Palindromes
- UVA 401 Palindromes
- UVa 401: Palindromes
- UVA 401 Palindromes
- 实现权限控制的几种方式
- Struts2开发--类型转换
- MySQL Create Table语句的应用与语法
- 代码整洁之道——命名与函数
- 结构体 “值传递” 与“地址传递”
- uva 401 Palindromes
- GridView中的CheckBox绑定
- 带头结点的单链表赋初值(尾插法)VS2010 C++
- 触发器(trigger)学习
- MYSQL事务(transaction)
- GridView后台添加模板列
- Mysql FirstStudy
- The way to win is to keep playing
- Tomcat 7配置Web管理登录