题解 | #用两个栈实现队列#
用两个栈实现队列
http://www.nowcoder.com/practice/54275ddae22f475981afa2244dd448c6
日常刷题😍
import java.util.Stack;
public class Solution {
Stack<Integer> stack1 = new Stack<Integer>();
Stack<Integer> stack2 = new Stack<Integer>();
public void push(int node) {
stack1.push(node);
}
public int pop() {
int w;
int len=stack1.size();
for(int i=0 ; i<len; i++){
stack2.push(stack1.pop());
}
w=stack2.pop();
for(int i=0;i<len-1;i++){
stack1.push(stack2.pop());
}
return w;
}
}
