Welcome to CS 106B Word Ladder.
Please give me two English words, and I will change the
first into the second by changing one letter at a time.

Dictionary file name? dictionary.txt

Word #1 (or Enter to quit): metal
Word #2 (or Enter to quit): azure
No word ladder found from azure back to metal.

Word #1 (or Enter to quit): kwyjibo
Word #2 (or Enter to quit): fluxbar
The two words must be found in the dictionary.

Word #1 (or Enter to quit): car
Word #2 (or Enter to quit): banana
The two words must be the same length.

Word #1 (or Enter to quit): monkey
Word #2 (or Enter to quit): monkey
The two words must be different.

Word #1 (or Enter to quit): partial
Word #2 (or Enter to quit): 
Have a nice day.