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ArrayStack.java
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68 lines (55 loc) · 1.34 KB
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public class ArrayStack<E> implements Stack<E> {
Array<E> array;
public ArrayStack(int capacity) {
array = new Array<>(capacity);
}
public ArrayStack() {
array = new Array<>();
}
@Override
public int getSize() {
return array.getSize();
}
@Override
public boolean isEmpty() {
return array.isEmpty();
}
public int getCapacity() {
return array.getCapacity();
}
@Override
public void push(E e) {
array.addLast(e);
}
@Override
public E pop() {
return array.removeLast();
}
@Override
public E peek() {
return array.getLast();
}
@Override
public String toString() {
StringBuilder res = new StringBuilder();
res.append("Stack: ");
res.append("[");
for (int i = 0; i < array.getSize(); i++) {
res.append(array.get(i));
if (i != array.getSize() - 1) {
res.append(", ");
}
}
res.append("] top");
return res.toString();
}
public static void main(String[] args) {
ArrayStack<Integer> stack = new ArrayStack<>();
for (int i = 0; i < 5; i++) {
stack.push(i);
System.out.println(stack);
}
stack.pop();
System.out.println(stack);
}
}