**Problem 4**

*A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99.*

*Find the largest palindrome made from the product of two 3-digit numbers.*

**Solution**

# A palindromic number reads the same both ways.

# The largest palindrome made from the product of

# two 2-digit numbers is 9009 = 91 99.

# Find the largest palindrome made from the

# product of two 3-digit numbers.

# placeholder

answer = 0;

#loop through each 3-digit number

for i in 100..999 do

for j in i..999 do

product = i*j

# the palindrome test is simple here

# since we are using the same technique

# as the F# and C# functions

if product.to_s().reverse == product.to_s() &&

answer < product

answer = product

end

end

end

puts answer

**Discussion**

I have to admit, Ruby makes this code pretty simple.

If you have questions, leave a comment or please find me on Twitter (@azzlsoft) or email (rich@azzlsoft.com).