DDM Interactive Programming Challenge Submissions

Challenges:

Create a program that takes a roman numeral and outputs it to STDOUT.
Given a text file, reverse every word in the file.
IS THE KING IN CHECK?
Write a program that solves word-chain puzzles.
NUMERIC MAZE
Given a source of words in the form of a text file, determine the number of dictionary words in the file.
The ABACABA sequence
Maximum path sum
Vigenère Cipher
Sierpinski's Triangle ASCII art
Analyze the poker hand