Java
Queue:  Queue.java,  QueueTest.java,  Makefile
Stack:   Stack.java,  StackTest.java,  Makefile 
File input-output and String tokenization: FileIO.java 

C:
Queue in C:  Queue.h,  Queue.c, QueueTest.c,  Makefile
Stack in C:  Stack.h,  Stack.c,  StackTest.c ,  Makefile
File input-output and String tokenization:  FileIO.c

Programming Assignment 4:
Some matched input-output files:  in1 out1   in2 out2   in3 out3   in4 out4   in5 out5
A perl script for creating random input files:  random_graph