A dozen stack is a stack with a fixed size of 12 elements. If a dozen stack is full, then the element that has been on the stack, the longest, is removed to make room for a new new element. For this problem, you are required to design a class named DozenStack.java, which extends DozenStackAbstract.java, and implements push method to captures this specification of a dozen stack.
given : DozenStackAbstract.java
public abstract class DozenStackAbstract{
private Character[] c;
private int total;
public DozenStackAbstract(){
c=new Character[12];
total=0;
}
public abstract void push(char c);
public boolean isEmpty(){
return total==0;
}
public boolean isFull(){
return total==12;
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