Implementation of two stack with an array. There are two different ways in which we can implement this. Method 1: By dividing the array in two equal halves The most simplest way is to implement two stacks in an array is by dividing the array in two equal halves and using these halves ...
To handle this, we can grow stacks from two extreme corners of the array. In other words, the first stack grows from the0'thindex, and the second stack grows from the(n-1)'thindex, wherenis the array size. Both stacks can grow towards each other with no fixed capacity. Now overflow...
C language program to implement stack using array #include<stdio.h>#defineMAX 5inttop=-1;intstack_arr[MAX];/*Begin of push*/voidpush(){intpushed_item;if(top==(MAX-1))printf("Stack Overflow\n");else{printf("Enter the item to be pushed in stack :");scanf("%d",&pushed_item);top...
/*how to use two stacks to implement the queue: offer, poll, peek,size, isEmpty offer(3) offer(2) poll() offer(1) peek() offer(6) poll() poll() 3 2 2 1 in (3 2) (1 6) out (2) (3) 6 (1) stack1(in): is the only stack to store new elements when adding a new ...
Implement Queue by Two Stacks 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.
Double Stack Using Class Here, we willimplement a double-stack using class; we can implement two stacks inside a single array using class. Double Stack Implementation Using Class in C# The source code toimplement a Double Stack using classis given below. The given program is compiled and execut...
implement it by two stacks, do not use any other data structure and push, pop and top should be O(1) by AVERAGE. 1. 在push上做文章,每次push前,将stack1中的元素依次弹到stack2,element push到stack2后,再将stack2依次弹到stack1.
http://www.lintcode.com/en/problem/implement-queue-by-two-stacks/ 【题目解析】 用两个Stack来实现一个Queue,可以考虑到push()时,几乎与Queue中的offer()一样,都是加在末尾,区别是当Stack pop()时,取出的是最近加入(newest)的元素,而Queue用poll()则是将最老(oldest)的元素取出。使用2个Stack,可以将...
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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...