Object Oriented Programming (OOP) Lab Aug 18th

First Program By me and Mr.Ashish

Fibonacci and Factorial

==================

import java.util.Scanner;

import java.io.*;

class fact

{

int i,f=0,s=1,third,fact=1,n;

int face(int n)

{

if(n==0)

{

return(fact);

}

else

for(i=1;i<=n;i++)

{

fact=fact*i;

}

return fact;

}

void fibbo(int n)

{

System.out.println("\n\n\n"+f+"\n\n"+s);

for(i=0;i

{

third=f+s;

f=s;

s=third;

System.out.println("\n\n\n"+third);

}

}

}

class demofact

{

public static void main(String args[])

{

int n,x,choice;

Scanner in=new Scanner(System.in);

while(true)

{

System.out.println("\n\nENTER THE CHOICE...\n\n\n1.FACTORIAL...\n\n\n2.FIBBONACI....\n\n\n3.EXIT");

choice=in.nextInt();

switch(choice)

{

case 1:

System.out.println("\n\n\nENTER THE NUMBER...... ");

n=in.nextInt();

fact ob1=new fact();

System.out.println("\n\n\nThe factorial is "+ob1.face(n));

break;

case 2:

System.out.println("\n\n\nENTER THE NUMBER...... ");

n=in.nextInt();

fact ob2=new fact();

ob2.fibbo(n);

break;

case 3: break;

}

}

}

}

This program however contains a small bug....When U will try to exit the program, it wont. For exiting u can use any alphabet like a,b.... which will generate an exception and then u can exit. We will solve the problem quickly.

Palindrome by Arka "MBPS" Mukherjee a.k.a "Java.lang"

===========================================

import java.io.*;

public class palindrome

{

public static void main(String args[])throws IOException

{

char c[]=new char[20];

char b[]=new char[20];

int a;

int n;

String s;

boolean ispalindrome=true;

System.out.println("enter the STRING");

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

s=br.readLine();

c=s.toCharArray();

n=s.length();

for(int i=n-1;i>=0;i-- )

{

b[n-i-1]=c[i];

}

for(int i=0;i

{

if(b[i]!=c[i])

{

System.out.println(" Not Palindrome");

ispalindrome=false;

break;

}

}

if(ispalindrome)

System.out.println("It is Palindrome");

}

}