classMyQueue{privateStack<Integer> stack;/** Initialize your data structure here. */publicMyQueue(){ stack =newStack<Integer>(); }/** Push element x to the back of queue. */publicvoidpush(intx){ stack.push(x); }/** Removes the element from in front of queue and returns that elem...
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...
此解法和上面的第一种解法正好相反,是在入队列的时候,借助另外一个栈来进行反转操作,而出队列和获取队列顶的操作可以直接使用栈的方法,无需特殊处理。 classMyQueue2{Stack<Integer>stack;/** Initialize your data structure here. */publicMyQueue2(){stack=newStack<Integer>();}/** Push element x to th...
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. ...
Implement a first in first out (FIFO) queue using only two stacks. The implemented queue should support all the functions of a normal queue (push, peek, pop, and empty). Implement the MyQueue class: void push(int x) Pushes element x to the back of the queue. int pop() Removes the...
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. ...
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. ...
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. ...