number.rb

def isPalindrome(low, high)
  while (low < high) do
    if (low != high)
      return false;
    end

    low += 1
    high -= 1
  end

  return true;
end

def IsAlmostPalindrome(str)
  low = 0
  high = str.size - 1

  while (low < high) do
    if (str[low] == str[high])
      low += 1
      high -= 1
    else
      if (isPalindrome(str[0].to_i + low + 1, str[0].to_i + high))
        return low
      end

      if (isPalindrome(str[0].to_i + low, str[0].to_i + high - 1))
        return high;
      end

      return -1
    end
  end

  return -2
end