可见,Python 最基础的列表,就可以实现常见的三种基础数据结构了。 这次是情况反过来,用栈实现队列。 (先把上次的概念介绍copy 过来) 栈Stack:后进先出,last-in-first-out LIFO 队列Queue:先进先出,first-in-first-out FIFO 题目要求:用后进先出(栈),来模拟先进先出(队列) 最多使用2个栈,来实现队列;
popStack) - 1] return top } func (this *MyQueue) Peek() int { // 先进行转移,避免 pop 栈为空 this.transfer() // 返回 pop 栈顶元素 return this.popStack[len(this.popStack) - 1] } func (this *MyQueue) Empty() bool { // 当两个栈都为空是,队列才为空 return len(this.pushStac...
return True if (len(self.inStack)+len(self.outStack))==0 else False
MyQueue myQueue = new MyQueue(); myQueue.push(1); // queue is: [1] myQueue.push(2); // queue is: [1, 2] (leftmost is front of the queue) myQueue.peek(); // return 1 myQueue.pop(); // return 1, queue is [2] myQueue.empty(); // return false 提示: 1 <= x <=...
下面的python代码是把stack2当做是和队列顺序一样的,这样的话,如果stack2不空,那么久弹出元素就行。否则,如果stack1中有元素,那么在做push和pop的时候,需要先把stack1中的元素颠倒到stack2中。 class MyQueue(object): def __init__(self): """
queue.LifoQueue Using list to Create a Python Stack The built-in list structure that you likely use frequently in your programs can be used as a stack. Instead of .push(), you can use .append() to add new elements to the top of your stack, while .pop() removes the elements in the...
self.q_ = Queue() self.top_ = None # @param x, an integer # @return nothing def push(self, x): self.q_.push(x) self.top_ = x # @return nothing def pop(self): for _ in xrange(self.q_.size() - 1): self.top_ = self.q_.pop() self.q_.push(self.to...
// implement an atomic putList function which can put a list of object atomically. By atomically it mean the objs in the list should be next to each other in the queue. The size of the list could be larger than the queue capacity. ...
TheMyCapturedResultReceiverclass implements theCapturedResultReceiverinterface. Theon_captured_result_receivedmethod, running on a native C++ worker thread, returns the processed result to the main thread and stores it in a thread-safe queue. In the main thread, we can check the queue for new resu...
View details Merged via the queue into main with commit 62bdbf2 Dec 14, 2024 19 checks passed hynek deleted the copy-replace branch December 14, 2024 14:57 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Reviewers Tinche Assignees...