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...
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. */...
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...
+ 1 yes you can implement stacks and queue in Java. you might be surprised because in this app there is not any lesson for stacks and queues. it is because this app is just for beginners who faces difficulties in getting started with. if you want to learn for stacks and queues I will...
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...
class QueueTwoStacks(object): # Implement the enqueue and dequeue methods def enqueue(self, item): pass def dequeue(self): pass # Tests class Test(unittest.TestCase): def test_basic_queue_operations(self): queue = QueueTwoStacks() queue.enqueue(1) queue.enqueue(2) queue.enqueue(3) actual...
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...
You can use Oracle Cloud Infrastructure (OCI) Queue’s API and SDKs to create, report and then utilize this service as both a message source and as a consumer. While this playbook focuses on the Java APIs, the same principles and capabilities are available in all language SDKs. OCI Queu...
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. ...
/** Push element x to the back of queue. */ public void push(int x) { in.push(x); } /** Removes the element from in front of queue and returns that element. */ public int pop() { moveAllToOut(); return out.pop();