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Referenceshttp://www.openbookproject.net/thinkcs/archive/java/english/chap17.htm

http://cslibrary.stanford.edu/109/TreeListRecursion.html

http://stackoverflow.com/questions/11871520/how-could-i-read-input-from-

the-console-using-the-scanner-class

http://stackoverflow.com/questions/1200621/declare-array-in-java

http://stackoverflow.com/questions/5887709/getting-random-numbers-in-

java

http://stackoverflow.com/questions/10042/how-do-i-implement-a-linked-list-

in-java