回文数问题。如果一个数按反向顺序放置后仍然相等，称为回文数（如： 12321）。编程：任意输入一个数据，判断此数是否为回文数。,Palindrome number of issues. If a few by the reverse is still the same after placing the order, known as the palindrome number (eg: 12,321). Programming: an arbitrary input data, to determine whether this number palindrome number.