Write a java program where you declare and use a Queue and a Stack. Hint: (impor

Question

Write a java program where you declare and use a Queue and a Stack.
Hint: (import the stack and queue libraries) use the library methods: for a stack use push and pop, for a
queue add
a) Declare a queue called “q” and load it with the integers: 10, 20, 30
b) Display the queue by printing it.
c) Remove the first node of the queue, display the queue size, display the queue head after the
remove.
d) Declare a stack called “s” and load it with the integers: 100, 200, 300
e) Display the stack by printing it.
f) Remove a node from the stack, display the stack size, display the stack top after the remove.

Explanation / Answer

Stack<String> stack = new Stack<String>();
stack.push("Test");
...
String next = stack.pop();

Iterator<String> i = queue.iterator();
while (i.hasNext()) {
String s = i.next();
StdOut.println(s);
}

for (String s : queue)
StdOut.println(s);

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