Let us consider the following puzzle called a word ladder. Transform the word “FOOL” into the word “SAGE”. In a word ladder puzzle you must make the change occur gradually by changing one letter at a time. At each step you must transform one word into another word, you are not allowed to transform a word into a non-word. The word ladder puzzle was invented in 1878 by Lewis Carroll, the author of Alice in Wonderland. The following sequence of words shows one possible solution to the problem posed above.

wordtransformation\Graph.cpp
..................\Graph.h
..................\Graph.o
..................\main
..................\main.cpp
..................\main.o
..................\Makefile
..................\Node.cpp
..................\Node.h
..................\Node.o
..................\PreRecord.cpp
..................\PreRecord.h
..................\PreRecord.o
..................\Queue.cpp
..................\Queue.h
..................\Queue.o
..................\Record.cpp
..................\Record.h
..................\Record.o
..................\words
..................\WordTransformationProgram2014.pdf
wordtransformation

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