while(!queue2.isEmpty()){ top = queue2.poll(); queue1.offer(top); } }else{ while(!queue1.isEmpty()){ top = queue1.poll(); queue2.offer(top); } } return top; } /** Returns whether the stack is empty. */ public boolean empty() { return queue1.isEmpty() && queue2.isE...
importjava.util.NoSuchElementException;importjava.util.LinkedList;importjava.util.Queue;classMyStack{/** * The main queue using to store all the elements in the stack */privateQueue<Integer> q1;/** * The auxiliary queue using to implement `pop` operation */privateQueue<Integer> q2;/** * ...
System.out.println(mVexs[i]+" "); queue[rear++] = i; } while(head != rear){ int j = queue[head++]; for(int k = firstVertex(j);k>=0;k=nextVertex(j,k)) if(!visited[k]){ visited[k]= true; System.out.println(mVexs[k]+" "); queue[rear++] = k; } } } } /* *...
#include<iostream>#include<queue>usingnamespacestd;queue<int>qu1;queue<int>qu2;boolqu1_use=1;boolqu2_use=0;voidpush(intx);voidpop();inttop();boolempty();voidmain(){push(1);push(2);push(3);push(4);inti=5;while(i){if(!empty()){cout<<top()<<endl;pop();}i--;}}voidpush...
225. Implement Stack using Queues刷题笔记 用一个队列实现栈 class MyStack: def __init__(self): self.queue = [] def push(self, x: int) -> None: self.queue.append(x) def pop(self) -> int: if self.queue: for _ in range(len(self.queue)-1):...
public class MyQueue { Stack<Integer> s1; Stack<Integer> s2; public MyQueue() { s1 = new Stack(); s2 = new Stack(); } /** Push element x to the back of queue. */ public void push(int x) { s1.push(x); } /** Removes the element from in front of queue and returns that...
// Removes an element from the queue pop(st) 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 ...
Inserting 1 Inserting 2 Inserting 3 Stack: 1, 2, 3, After popping out 1, 2, In the above example, we have implemented the stack data structure in Java. To learn more, visit Stack Data Structure. Example 2: Implement stack using Stack class Java provides a built Stack class that can...
in sql server An invalid character was found in the mail header: '@'. 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 ...
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