Ruby function to detect if a Fixednum is a palendrome.

isPalendrome.rb

# @author David Wortham <djwortham+programming@gmail.com>
# @date 2011-04-30
# @license MIT License: http://www.opensource.org/licenses/mit-license.php

def isPalendrome(number)
  numberStr = number.to_s()
  return false if numberStr.empty? || numberStr.length < 0
  return true if numberStr.length < 2
  lCursor = 0
  rCursor = numberStr.length - 1
  while lCursor < rCursor
    return false if numberStr.getbyte(lCursor) != numberStr.getbyte(rCursor)
    lCursor = lCursor + 1
    rCursor = rCursor - 1
  end
  return true
end

# usage
# puts "111 is a palendrome? #{isPalendrome(111)}"