Stack in Java Using Linked List This article demonstrates a linked list implementation of generic stack. Linked list implementation of stack is efficient than array implementation because it does not reserve memory in advance. A stack is a container to which objects are added and removed by followi...
代码 importjava.util.LinkedList;importjava.util.Queue;classMyStack{privateQueue<Integer> queue_1 =newLinkedList<>();privateQueue<Integer> queue_2 =newLinkedList<>();privateinttop;/** Initialize your data structure here. */publicMyStack(){ }/** Push element x onto stack. */publicvoidpush(i...
Depending on your language, stack may not be supported natively. You may simulate a stack by using a list or deque (double-ended queue), as long as you use only standard operations of a stack. You may assume that all operations are valid (for example, no pop or peek operations will be...
}/**Push element x onto stack.*/publicvoidpush(intx) {if(num == 1){ queue1.add(x); }else{ queue2.add(x); } }/**Removes the element on top of the stack and returns that element.*/publicintpop() {if(num == 1){intsize =queue1.size();for(inti = 0; i < size - 1; ...
If you want to practice data structure and algorithm programs, you can go through 100+ java coding interview questions. In this program, we will see how to implement stack using Linked List in java. Stack is abstract data type which demonstrates Last in first out (LIFO) behavior. We will ...
C++ program to implement stack using array STACK implementation using C++ structure with more than one item STACK implementation using C++ class with PUSH, POP and TRAVERSE operations C program to reverse a string using stack Check for balanced parentheses by using Stacks (C++ program) ...
【LeetCode题解】232_用栈实现队列(Implement-Queue-using-Stacks) 目录 描述 解法一:在一个栈中维持所有元素的出队顺序 思路 入队(push) 出队(pop) 查看队首(peek) 是否为空(empty) Java 实现 Python 实现 解法二:一个栈入,一个栈出 思路 入队(push) 出队(pop) 查看队首(peek) 是否为空(empty) Java...
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...
We can also implement a Stack using Queue in the below program.Exampleimport java.util.*; public class StackFromQueueTest { Queue queue = new LinkedList(); public void push(int value) { int queueSize = queue.size(); queue.add(value); for (int i = 0; i < queueSize; i++) { ...
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 s = q.size(); q.push(val); for (int i=0; i<s; i++) { q.push(q.front...