alokshanhbti

#include<algorithm>

using namespace std;

int euclid_gcd(int a, int b)
{
  while (b != 0)
  {
    int r = a % b;
    a = b;

alokshanhbti

// Stack - Array based implementation. 
// Creating a stack of integers. 
#include<stdio.h>

#define MAX_SIZE 101

int A[MAX_SIZE]; // integer array to store the stack 
int top = -1;  // variable to mark top of stack in array

// Push operation to insert an element on top of stack. 

alokshanhbti

// Stack - Object oriented implementation using arrays
#include <iostream>
using namespace std;
#define MAX_SIZE 101 

class Stack
{
private:
  int A[MAX_SIZE];  // array to store the stack
	int top;   // variable to mark the top index of stack. 

alokshanhbti

/*
  C++ Program to check for balanced parentheses in an expression using stack.
  Given an expression as string comprising of opening and closing characters
  of parentheses - (), curly braces - {} and square brackets - [], we need to 
  check whether symbols are balanced or not. 
*/
#include<iostream>
#include<stack>
#include<string>
using namespace std;

alokshanhbti

/* Queue - Circular Array implementation in C++*/
#include<iostream>
using namespace std; 
#define MAX_SIZE 101  //maximum size of the array that will store Queue. 

// Creating a class named Queue.
class Queue
{
private:
	int A[MAX_SIZE];

alokshanhbti

/* Doubly Linked List implementation */
#include<stdio.h>
#include<stdlib.h>

struct Node  {
	int data;
	struct Node* next;
	struct Node* prev;
};

alokshanhbti

/*Queue - Linked List implementation*/
#include<stdio.h>
#include<stdlib.h>
struct Node {
	int data;
	struct Node* next;
};
// Two glboal variables to store address of front and rear nodes. 
struct Node* front = NULL;
struct Node* rear = NULL;

alokshanhbti

/*
  Evaluation Of postfix Expression in C++ 
  Input Postfix expression must be in a desired format. 
  Operands must be integers and there should be space in between two operands.
  Only '+'  ,  '-'  , '*' and '/'  operators are expected. 
*/
#include<iostream>
#include<stack>
#include<string>

alokshanhbti

/*
  Infix to postfix conversion in C++ 
  Input Postfix expression must be in a desired format. 
  Operands and operator, both must be single character.
  Only '+'  ,  '-'  , '*', '/' and '$' (for exponentiation)  operators are expected. 
*/
#include<iostream>
#include<stack>
#include<string>

alokshanhbti

/* Binary tree - Level Order Traversal */
#include<iostream>
#include<queue>
using namespace std;

struct Node {
	char data;
	Node *left;
	Node *right;
};