(self.temp_stack)==0if__name__=='__main__':queue=QueueUsingTwoStacks()Q=int(input())queries=[]for_inrange(Q):queries.append(list(map(int,input().split()))forqueryinqueries:cmd=query[0]ifcmd==1:item=query[1]queue.enqueue(item)elifcmd==2:queue.dequeue()else:print(queue.peek(...
stack2.push(x); } }/**Removes the element from in front of queue and returns that element.*/publicintpop() {intres;while(!stack1.isEmpty()){ stack2.push(stack1.pop()); } res=stack2.pop();while(!stack2.isEmpty()){ stack1.push(stack2.pop()); }returnres; }/**Get the fro...
Java [Leetcode 232]Implement Queue using Stacks 题目描述: Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front of queue. peek() -- Get the front element. empty() -- Return whether th...
Implement a MyQueue class which implements a queue using two stacks. buffer用来存放正确顺序的数字,stack用来存放新加的数字。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 public class MyQueue { Stack<Integer> stack = new Stack<Integer>(); Stack<...
[LeetCode] 232. Implement Queue using Stacks 225题。 题干即是题意,用栈实现队列的几个函数,例子, Example: MyQueue queue = new MyQueue(); queue.push(1); queue.push(2); queue.peek(); // returns 1 queue.pop(); // returns 1
Java程序 Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front of queue. peek() -- Get the front element. empty() -- Return whether the queue is empty. ...
Queues typically, but do not necessarily, order elements in a FIFO (first-in-first-out) manner. Among the exceptions are priority queues, which order elements according to a supplied comparator, or the elements' natural ordering, and LIFO queues (or stacks) which order the elements LIFO (last...
232.Implement Queue using Stacks(Stack-Easy) Implement the following operations of a queue using stacks. push(x) – Push element x to the back of queue. pop() – Removes the element from in front of queue. peek() – Get the front element....
Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front of queue. peek() -- Get the front element. empty() -- Return whether the queue is empty. ...
232. Implement Queue using Stacks Java Solutions 2016-05-02 20:36 −... Miller1991 0 139 [Java数据结构]Queue 2019-12-25 08:47 −Queue扩展了Collection,它添加了支持根据先进先出FIFO原则对元素排序的方法。 当对Queue调用add和offer方法时,元素始终添加在Queue的末尾;要检索一个元素,就要使用一个元...