classMyQueue{privateStack<Integer> s1;privateStack<Integer> s2;/** Initialize your data structure here. */publicMyQueue(){ s1 =newStack<>(); s2 =newStack<>(); }/** Push element x to the back of queue. */publicvoidpush(intx){while(!s1.isEmpty()) { s2.push(s1.pop()); } s...
Stack_1.push(x); }/** Removes the element from in front of queue and returns that element. */publicintpop(){//如果栈2是空的if(Stack_2.isEmpty()){//将栈1的所有元素入栈2while(!Stack_1.isEmpty()){ Stack_2.push(Stack_1.pop()); } }if(!Stack_2.isEmpty()) {returnStack_2....
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. Notes: You must use only standard oper...
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. Notes: You must useonlystandard operatio...
1 读题 LeetCode 232E 用栈实现队列 Implement Queue using Stacks 2 Python 解题 正如咱们前面那个问题,list 既可以实现栈,还能实现列表,所以咱这题的代码,和那个队列模拟栈的就很类似了。 ## LeetCode 232## Impletement Queue using StackclassMyQueue:def__init__(self):self.l1=[]## stack 1 = l1se...
建议和这道题leetcode 232. Implement Queue using Stacks 双栈实现队列 一起学习。 1)取栈顶元素: 返回有元素的队列的首元素 2)判栈空:若队列a和b均为空则栈空 3)入栈:a队列当前有元素,b为空(倒过来也一样)则将需要入栈的元素先放b中,然后将a中的元素依次出列并入列倒b中。(保证有一个队列是空的...
classMyQueue{Stack<Integer>stack;/** Initialize your data structure here. */publicMyQueue(){stack=newStack<>();}/** Push element x to the back of queue. */publicvoidpush(intx){Stack<Integer>temp=newStack<>();intsize=stack.size();//把原来的保存起来while(size>0){temp.push(stack.po...
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 相关推荐 [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...
classMyStack{public:/** Initialize your data structure here. */MyStack(){}queue<int>que;/** Push element x onto stack. */voidpush(int x){que.push(x);for(int i=0;i<que.size()-1;i++){que.push(que.front());que.pop();}}/** Removes the element on top of the stack and ...