new Stack
new HashMap<[type]>() Stack<Integer> stack = new Stack<>();
- push
push(E element) stack.push(1);
stack.push(2);
stack.push(3);
stack.push(4);
pop
clear
pop() stack.pop();
clear() stack.clear();
peek
peek() System.out.println(stack.peek());
출력
3
- size
- empty
- search
size() int size = stack.size();
empty() //stack에 데이터 있으면 반복
while(!stack.empty()){
...
}
search(D data) System.out.println(stack.search(1));