Showing posts with label Stack. Show all posts
Showing posts with label Stack. Show all posts

Friday 12 August 2016

Monday 8 August 2016

Lab Program 3 Stack 15CSL38 Data Structures in C Lab

Lab Program 3:

Design, Develop and Implement a menu driven Program in C for the following operations on STACK of Integers (Array Implementation of Stack with maximum size MAX) 
a. Push an Element on to Stack 
b. Pop an Element from Stack 
c. Demonstrate how Stack can be used to check Palindrome 
d. Demonstrate Overflow and Underflow situations on Stack 
e. Display the status of Stack 
f. Exit 
Support the program with appropriate functions for each of the above operations


#include<stdio.h>
#include<stdlib.h>
#define MAX 5

int s[MAX];
int top = -1;

void push(int item);
int pop();
void palindrome();
void display();

void main()
{
            int choice, item;
            while(1)
            {
                        printf("\n\n\n\n~~~~~~Menu~~~~~~ : ");
                        printf("\n=>1.Push an Element to Stack and Overflow demo ");
                        printf("\n=>2.Pop an Element from Stack and Underflow demo");
                        printf("\n=>3.Palindrome demo ");
                        printf("\n=>4.Display ");
                        printf("\n=>5.Exit");
                        printf("\nEnter your choice: ");
                        scanf("%d", &choice);
                        switch(choice)
                        {
                                    case 1:             printf("\nEnter an element to be pushed: ");
                                                            scanf("%d", &item);
                                                            push(item);
                                                            break;
                                    case 2:             item = pop();
                                                            if(item != -1)
                                                                        printf("\nElement popped is: %d", item);
                                                            break;
                                    case 3:             palindrome();
                                                            break;
                                    case 4:             display();
                                                            break;
                                    case 5:             exit(1);
                                    default:            printf("\nPlease enter valid choice ") ;
                                                            break;
                    }
            }
}

void push(int item)
{
            if(top == MAX-1)
            {
                        printf("\n~~~~Stack overflow~~~~");
                        return;
            }

            top = top + 1 ;
            s[top] = item;
}

int pop()
{
            int item;
            if(top == -1)
            {
                        printf("\n~~~~Stack underflow~~~~");
                        return -1;
            }
            item = s[top];
            top = top - 1;
            return item;
}

void display()
{
            int i;
            if(top == -1)
            {
                        printf("\n~~~~Stack is empty~~~~");
                        return;
            }
            printf("\nStack elements are:\n ");
            for(i=top; i>=0 ; i--)
                        printf("| %d |\n", s[i]);
}

void palindrome()
{
            int flag=1,i;
            printf("\nStack content are:\n");
            for(i=top; i>=0 ; i--)
                        printf("| %d |\n", s[i]);

            printf("\nReverse of stack content are:\n");
            for(i=0; i<=top; i++)
                        printf("| %d |\n", s[i]);

            for(i=0; i<=top/2; i++)
            {
                        if( s[i] != s[top-i] )
                        {
                                    flag = 0;
                                    break;
                        }
            }
            if(flag == 1)
            {
                        printf("\nIt is palindrome number");
            }
            else
            {
                        printf("\nIt is not a palindrome number");
            }
}


Output:

~~~~~~Menu~~~~~~ :
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 11

~~~~~~Menu~~~~~~ :
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 12

~~~~~~Menu~~~~~~ :
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 13

~~~~~~Menu~~~~~~ :
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 14

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 15

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 16
~~~~Stack overflow~~~~

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 4

Stack elements are:
|  15  |
|  14  |
|  13  |
|  12  |
|  11  |

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 15

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 4
Stack elements are:
|  14  |
|  13  |
|  12  |
|  11  |
~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 14

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 13

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 12

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
~~~~Stack underflow~~~~

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 4
~~~~Stack is empty~~~~

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 22

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 3
Stack content are:
|  11  |
|  22  |
|  11  |

Reverse of stack content are:
|  11  |
|  22  |
|  11  |

It is palindrome number

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 22

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 2
Element popped is: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 11

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 22

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 1
Enter an element to be pushed: 33

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 3
Stack content are:
|  33  |
|  22  |
|  11  |

Reverse of stack content are:
|  11  |
|  22  |
|  33  |

It is not a palindrome number

~~~~~~Menu~~~~~
=>1.Push an Element to Stack and Overflow demo
=>2.Pop an Element from Stack and Underflow demo
=>3.Palindrome demo
=>4.Display
=>5.Exit
Enter your choice: 5



Also Credits to: 
Manoj Taleka  (manoj89biet@gmail.com)

Yashaswini Jogi (jogi.yash@gmail.com)

Sunday 31 July 2016

N Fibonacci series using Recursion

Recursion: Fibonacci Series


Write a program to print N Fibonacci terms using Recursion.

#include<stdio.h>
int fib(int n);

void main()
{
                int i, n;
                printf("\nEnter the value of n:");
                scanf("%d", &n);

                printf("\n %d fibonacci terms are: ", n);
                for(i=0; i<n; i++)
                                printf("%d ", fib(i));
}

int fib(int n)
{
                if(n == 0)
                                return 0;
                else if(n == 1)
                                return 1;
                else
                                return (fib(n-1) + fib(n-2));
}

Output:
Enter the value of n: 10

10 fibonacci terms are: 
0               1              1              2              3              5              8              13           21           34