Q$6$ Stacks

$4$ Points

Grading comment:

All questions assume that there is some correctly implemented class Stack and Queue.

Consider the following

public class StackTest$\{$

public static void main$($String$[]$ args$)\{$

Stack stack $=$ new Stack$()$;

for$($int i $=0$; i $<10$; i$++)\{$

stack.push$($i$)$;

$\}$

stack.pop$()$;

stack.pop$()$;

stack.pop$()$;

stack.peek$()$;

$\}$

$\}$

What is the value returned from a call stack.peek$()$