Palindromes

 

Description

 

 

  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.

 

 

Character	Reverse	Character	Reverse	Character	Reverse
A	A	M	M	Y	Y
B		N		Z	5
C		O	O	1	1
D		P		2	S
E	3	Q		3	E
F		R		4
G		S	2	5	Z
H	H	T	T	6
I	I	U	U	7
J	L	V	V	8	8
K		W	W	9
L	J	X	X

 

 

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.

 

 

STRING	CRITERIA
" -- is not a palindrome."	if the string is not a palindrome and is not a mirrored string
" -- is a regular palindrome."	if the string is a palindrome and is not a mirrored string
" -- is a mirrored string."	if the string is not a palindrome and is a mirrored string
" -- is a mirrored palindrome."	if the string is a palindrome and is a mirrored string

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.

这个字符串的题本来不难，就在于有点太坑了
首先理解影像字符：像A、T、X、W这种字符影像之后是本身也就是左右对称的左右翻转之后还是本身的，还有一种字符影像之后与本身不同了，变成了另一个字符了像E和3,J和L这种，所以也就出现了如图所示的镜像表。
其次理解题意：

A mirrored palindrome是一种字符串，它里面全都是就是像Y、A、T、X、W等这种左右对称的字符，也就是说在字符串里必须首先像ATTA这种从前向后读和从后向前读都一样的，其次每一个字符的镜像之后是它本身的才行。

A mirrored string是一种字符串就是包括包括镜像字符的像3和E这种就称为影像后相等的，所以在这里：字符串可以出现像A这种以自身为镜像，但不能全部都是这种。所以判断时首先判断从前向后读和从后向前读必须镜像相等的而且不能全部都是字符串镜像为自己本身的字符串。

A regular palindrome是一种字符串：回文字符串就是正向读和反向读字符完全相等，但不能全是像A这种镜像之后还为本身的字符串，“可以有不能全是”。

如果正向读和反向读完全没有关系的就哪种都不是。

做的时候比较坑，开始忘记了一个字符的字符串的时候了，后来还是错误主要本文有句话必须看见In addition,after each output line,you must print an empty line.英语不好真的连多一句都不想去读啊。然后首先对于刚开始AC者一定要看懂题意，这个至关重要。