Stack

栈Stack

栈的特点：后进后先

* 初始化Stack stack=new Stack<>(); * 栈的特点：先进后出 * Object push(Object obj)压栈：压入栈顶/或add效果相同 * Object pop()弹栈：移除栈顶 * Object peek()查看栈顶，但不弹栈 * boolean isEmpty()返回：栈是否为空，用法如

while(!stack.isEmpty){
   do some thing
   }

public class Main {
public static void main(String[] args) {
	Scanner scan = new Scanner(System.in);
	Stack<Integer> stack=new Stack<>();
	scan.close();
}
}