importjava.util.Stack;classMyQueue{//初始化栈1和栈2privateStack<Integer> Stack_1;privateStack<Integer> Stack_2;/** Initialize your data structure here. */publicMyQueue(){ Stack_1 =newStack<>(); Stack_2 =newStack<>(); }//进入第一个栈/** Push element x to the back of queue. */...
}/** Push element x to the back of queue. */publicvoidpush(intx){if(inStack.empty()) { front = x; } inStack.push(x); }/** Removes the element from in front of queue and returns that element. */publicintpop(){if(empty()) {thrownewIllegalArgumentException("[ERROR] The queue ...
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...
Depending on your language, stack may not be supported natively. You may simulate a stack by using a list or deque (double-ended queue), as long as you use only standard operations of a stack. You may assume that all operations are valid (for example, no pop or peek operations will be...
You may assume that all operations are valid (for example, no pop or top operations will be called on an empty stack). 要求使用双队列实现一个栈的所有的功能,是一个很经典的问题,需要记住学习。 建议和这道题leetcode 232. Implement Queue using Stacks 双栈实现队列 一起学习。
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 ...
Dequeue an element from the queue. C++ Java Python #include<bits/stdc++.h> using namespace std; class Stack { queue<int>q; public: void push(int val); void pop(); int top(); bool empty(); }; void Stack::push(int val) { int s = q.size(); q.push(val); for (int i=0...
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. An Unable to write data to the transport connectionestablished connection was aborted by the software in your host machine An unhandled exception occurred during the execut...
代码(Java): classMyQueue{privateStack<Integer>in=newStack<>();privateStack<Integer>out=newStack<>();// Push element x to the back of queue.publicvoidpush(intx){in.push(x);}// Removes the element from in front of queue.publicvoidpop(){while(!in.empty()){out.push(in.pop());}ou...
Stack<Integer> helper; public MyQueue() { data = new Stack(); helper = new Stack(); } public void push(int x) { data.add(x); } public int pop() { while (!data.isEmpty()) { helper.add(data.pop()); } int res = helper.pop(); ...