Update Palindrome Reorder.cpp

[AvivBlattner]

Support odd > 1

[Jonathan-Uy]

Your change gives an incorrect output for AABBC. One correct answer is ABCBA, however, your program outputs ABCCBA.

In my code, odd represents the character which appears an odd number of times, with 0 for A, and 25 for Z. I am only printing the character once on Line 30, since the other freq[odd] - 1 times are accounted for in the loops before and after it.