这是一个关于回文数的判断算法！
本题是判断一个数是否是回文数。
Determine whether an integer is a palindrome. Do this without extra space.
回文数猜想是一个未得到证明的猜想。
The supposition is one that has been not proved for palindrome Numbers.
求能分解为两个三位数乘积的最大回文数。
Find the largest palindrome made from the product of two 3 - digit Numbers.
找出两个三位数乘积所能制造处的最大回文数。
Find the largest palindrome made from the product of two 3-digit Numbers.
当然，回文数的首和尾都应是非零的，因此0220就不是回文数。
Of course, palindromes have neither leading nor trailing zeroes, so 0220 is not a palindrome.
用户从键盘输入一个1-9999之间的数，程序将判断这个数是几位数，并判断这个数是否回文数。
The user from the keyboard a 1-9999 between number, the program will judge this number is a few digits, and to determine the number of reported number is.
有趣的是，在2111年11/11/11的后一天也是一个回文数日期11/12/2111，这就使像阿齐兹·伊南那样的回文数爱好者感到非常激动。
Interestingly, in 2111, 11/11/11 will be followed by an eight-digit palindrome day, 11/12/2111, which is quite exciting for palindrome fans like Inan.
有趣的是，在2111年11/11/11的后一天也是一个回文数日期11/12/2111，这就使像阿齐兹·伊南那样的回文数爱好者感到非常激动。
Interestingly, in 2111, 11/11/11 will be followed by an eight-digit palindrome day, 11/12/2111, which is quite exciting for palindrome fans like Inan.
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