Assume that peek$(),$ pop$(),$ push$(),$ printStack$()$ methods are defined in the Stack class. Also Node class is defined.

Find the correct output:

stack. push$(10)$:

stack.push$(20)$;

stack. push $(50)$:

stack.push$(40)$:

stack. peek$()$;

System.out.println$($stack$.$ peek$())$;

Your answer:

$50$

$40$

$20$

$10$

$40$

$20$

$10$

$40$

$10$