The following method is intended to pop an item from the top of an Integer stack that is implemented as a linked list. However, there is a problem with it. Explain the problem and write the code for the correct implementation. public Integer pop () { if (top != null) { top = top.next; return top.value; return null;

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter18: Stacks And Queues
Section: Chapter Questions
Problem 16PE: The implementation of a queue in an array, as given in this chapter, uses the variable count to...
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The following method is intended to pop an item from the top of an Integer stack that is implemented as a linked list. However, there is a problem with it.
Explain the problem and write the code for the correct implementation.
public Integer pop () {
if (top != null) {
top = top.next;
return top.value;
return null;
}
Transcribed Image Text:The following method is intended to pop an item from the top of an Integer stack that is implemented as a linked list. However, there is a problem with it. Explain the problem and write the code for the correct implementation. public Integer pop () { if (top != null) { top = top.next; return top.value; return null; }
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