Welcome to CS 106X Word Ladder!
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.