Comp Project Final

8/11/2019 Comp Project Final

1/87

S.No. TOPIC REMARKS

1 Program 1

2 Program 2

3 Program 3

4 Program 4

5 Program 5

6 Program 6

7 Program 7

8 Program 8

9 Program 9

10 Program 10

11 Program 11

12 Program 12

13 Program 1314 Program 14

15 Program 15

16 Program 16

17 Program 17

18 Program 18

19 Program 19

20 Program 20

21 Program 21

22 Program 22


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23 Program 23

24 Program 24

25 Program 25


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Program 1: Write a program to enter a number at run time and

check if it is a Smith Number or not.

PROGRAM

import java.util.*;

class SmithNumber

{

static int n;

void input()

{

Scanner d=new Scanner(System.in);

System.out.println("Enter Number for checking");

n=d.nextInt ();

}

int CheckSmith()

{

int i,d,c,j,k,s=0,sum=0,t=n;

for(i=n;i>0;i=i/10)

{

d=i%10;

s=s+d;

}

t=n;

for(i=2;i


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{

if(t%i==0)

{

c=0;

for(j=1;j0;k=k/10)

{

d=k%10;sum=sum+d;

}

t=t/i;

i--;

}

}

}

if(sum==s)

return 1;


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else

return 0;

}

public static void main(String args[])

{

SmithNumber obj=new SmithNumber();

System.out.println("INPUT :");

obj.input();

System.out.println("\nOUTPUT :");

int ch=obj.CheckSmith();

if(ch==1)

{

System.out.println(n+" is a Smith Number");

}else

{

System.out.println(n+" is not a Smith Number");

}

}

}


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Program 2: Write a program to enter a number at run time and

check if it is a Happy Number or not by using logical functions.

PROGRAM

import java.util.*;

class HappyNumber

{

static int n;

void input()

{



System.out.println("Enter Number for checking");

n=d.nextInt ();

}

int Happy(int num)

{

int i,s=0,d=0;

while(num>=10)

{

s=0;

for(i=num;i>0;i/=10)

{

d=i%10;


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s=s+(d*d);

}

num=s;

}

if(s==1)

return 1;

else

return 0;

}


{

HappyNumber obj=new HappyNumber();

obj.input();

int ch=obj.Happy(n);System.out.println("\nOUTPUT");

if(ch==1)

System.out.println(n+" is a Happy Number");

else

System.out.println(n+" is not a Happy Number");

}

}


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Program 3: Write a program to print all special numbers between 1

to 1000.

PROGRAM

import java.util.*;

class SpecialNumber

{

int CheckSpecial(int num)

{

int i,d,f,j,s=0;

for(i=num;i>0;i=i/10)

{

d=i%10;

f=1;

for(j=1;j


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}


{

int i,ch;

SpecialNumber obj=new SpecialNumber();

System.out.println("OUTPUT :");

System.out.print ("\nSpecial Numbers between 1-1000 are : ");

for(i=1;i


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Program 4: Write a program to enter a Double -Dimensional array

at run time and print all elements of Upper Triangle.

PROGRAM

import java.util.*;

class UpperTriangle

{

static int size;

static int arr[][];

void input()

{

int i,j;


System.out.println("Enter size of grid for square matrix");

size=d.nextInt ();

arr=new int [size][size];

System.out.println("Enter Elements of Matrix");

for(i=0;i


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}

void PrintMatrix()

{

int i,j;

for(i=0;i


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{

System.out.print (arr[i][j]);

}

System.out.println();

}

}


{

UpperTriangle obj=new UpperTriangle();


obj.input();

System.out.println("\nINPUTTED MATRIX");

obj.PrintMatrix();

System.out.println("\nOUTPUT :");System.out.println("Upper Triangle");

obj.PrintTriangle();

}

}


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Program 5: Write a program to store all Prime Tribonacci numbers

in an array and print all its elements.

PROGRAM

import java.util.*;

class PrimeTribonacci

{

static int num;

static int series[];

void input()

{


System.out.println("Enter Number of terms");

num=d.nextInt ();

series=new int [num];

}

int Series()

{

int j,i=0,d=0,a=0,s=0,b=1,c=2,m=4;

series[0]=c;

i++;

while(m


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s=a+b+c;

a=b;

b=c;

c=s;

d=0;

for(j=1;j


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obj.input();

int j=obj.Series();

System.out.println("\nOUTPUT");

System.out.print ("Prime Tribonacci Series : ");

for(i=0;i


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Program 6: Write a program to enter a Decimal Number at run

time and print its Binary Equivalent.

PROGRAM

import java.util.*;

class Binary

{

static int num;

static String bin=new String();

void input()

{


System.out.println("Enter Number to print Binary Equivalent of");

num=d.nextInt ();

}

void binarychange(int n)

{

int i,d,s=0;

do

{

s=n%2;

bin=s+bin;

n=n/2;

}while(n!=0);


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}


{

Binary obj=new Binary();


obj.input();

obj.binarychange(num);

System.out.println("\nOUTPUT :");

System.out.println("Binary Equivalent of "+num+" is: "+bin);

}

}


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Program 7: A class Rearrange has been defined to insert and delete

elements from array. Some of the members of class are given below:

Class name : Rearrange

Data members/instance variables

a[] :int eger type array

n :size of array(int eger)

pos1 :position of insertion (int eger)

pos2 :position of deletion (int eger)

ite :item to be inserted (int eger)

Member functions

void enter() :To enter size , array elements and to display the entered

elements.

void insert() :To accept element (item) to be inserted , position of

insertion and insert element at the position of insertion.

void disp1() :To display array after item is inserted.

void disp2() :To display array after item is removed.

void remov() :To accept the position of deletion and delete item to be

deleted.

PROGRAM

import java.util.*;

class rearrange

{

static int a[];


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int b[];

int c[];

static int n;

int pos1,pos2,item;

void enter()

{


System.out.println("INPUT");

System.out.println("Enter the size of array");

n=d.nextInt ();

a=new int [n];

System.out.println("Enter elements of array");

for(int b=0;b


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void insert()

{

b=new int [n+1];


System.out.println("Enter the element and position where it is to be entered");

item=d.nextInt ();

pos1=d.nextInt ();

int i;

for(i=0;i


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System.out.println("ARRAY AFTER INSERTION");

for(int j=0;j


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void disp2()

{

System.out.println("ARRAY AFTER DELETION");

for(int i=0;i


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Program 8: A class modify is defined with following features

Class name : Modify

Data members

St :To store a string

len :To store length of the string

Member functions

void read() :To accept the String in uppercase

voidputin(int,char) :To insert a character at the specified position in string

and display the changed string.

void takeout(int) :To remove character from specified position in the

string

void change() :To replace each character in org string with character

which is at distance of 2.

Program:

import java.util.*;

class Modify

{

static String St="";

static StringBuffer res;

static int len=0;

static void read()

{



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System.out.println("Enter a string");

St=d.next();

St=St.toUpperCase();

System.out.println("String in uppercase is");

System.out.println(St);

len=St.length();

}

static void putin(int a,char ch)

{

ch=Character.toUpperCase(ch);

res= new StringBuffer(St);

if(a>=len)

res.append(ch);

else if(a>=0)res.setCharAt(a-1,ch);

System.out.println(res);

}

static void takeout(int a)

{

if(a>=0)

{

res.delete(a-1,a);

System.out.println(res);


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}

}

static void change()

{

for(int i=0;i=65&&x


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{


char cm;

Modify ob=new Modify();

read();

System.out.println("ENTER THE ELEMENT AND POSITION WHERE IT IS TO

BE ENTERED");

cm=d.next().charAt(0);

Character.toUpperCase(cm);int a=d.nextInt();

putin(a,cm);

System.out.println("Enter the position from element is to removed");

int pos=d.nextInt();

takeout(pos);

System.out.println("String with each element shifted two forward");

change();

}

}


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Program 9: A transpose of any matrix is found by int erchanging

rows with columns. A class Transarray contains 2d array of order

[m]*[n].Details of this class Transarray is given below

Class name :Transarray

Data members

arr[][] :Store the matrix elements

m :Store the number of rows

n :Store the number of columns

Members Functions

Transarray () :default constructor

Transarray (int mm, int nn) :To initialize the size of matrix m=mm , n=mn

void fillarray() :to enter the elements of the matrix

void transpose(Transarray A) :to find the transpose of the given matrix

void disparray() :Display array in matrix form

PROGRAM

import java.util.*;

class transarray

{

int arr[][]=new int [20][20];

int m,n;

public transarray()

{


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m=0;

n=0;

}

public transarray(int mm,int nn)

{

m=mm;

n=nn;

for(int a=0;a


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arr[a][b]=d.nextInt ();

}

}

}

void transpose(transarray A)

{

for(int r=0;r


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}

public static void main()

{


System.out.println ("INPUT ");

System.out.println("Enter the dimensions of array");

int a=d.nextInt ();

int b=d.nextInt ();

transarray c=new transarray();

transarray obj=new transarray(a,b);

obj.fillarray();

System.out.println("\nOUTPUT:");

System.out.println("Transposed Matrix");

obj.transpose(c);obj.disparray(c);

}

}


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Program 10: A class Numbers contains the following data members

and members functions to check for triangular numbers.[A

triangular numbers is formed by the addition of a consecutive

sequence of int egers starting from 1]Class name :Numbers

Data members :

n :int egers to be checked for whether it is triangular or not

Member function methods

void getnum() :To accept int eger n

int check(int ) :To check if n is triangular

void dispnum() :To display message whether number is triangular or not

Program:

import java.util.*;

class Numbers

{

static int n;

static void getnum()

{


System.out.println("INPUT:");

System.out.println("Enter the number to be checked");

n=d.nextInt ();

}


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static int check(int x)

{

int tri=1,k=0;

for(int a=2;ax)

{

k=0;break;

}

}

return k;

}

static void dispnum()

{

getnum();



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Program 11: A class Telcall () calculates the monthly phone bill of

consumer. Some of the members are given below:

Class Name :Telcall()

Data members

Phno :phone number

Name :name of the consumer

N :number of calls made

Amt :bill amount

Member Functions

Telcall() :Parameterised constructor to assign values to data

Members

Void compute() :To calculate phone bill according to the given slabs

Void dispdata() :To display details in specified format

Number of Calls

Rate

1 -100 Rs

500/- rental charge only 101-200

Rs 1.00 per call + rental charge

201-300 Rs 1.20

per call + rental charge

Above 300 Rs

1.50 per call +rental charge

Phone Number Name Total calls

Amount


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PROGRAM:

import java.util.*;

class telcall

{

long phno;

String name;

int n;

double amt;

public telcall(long p,String s,int c,double a)

{

phno=p;

name=s;

n=c;

amt=a;}

public void compute()

{

if(n


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Program 12: Write a program to enter of countries and their

corresponding capitals at runtime. If user enters a particular

country name to be searched in the list. If the country name exists it

should display the country name along with its capitals. Otherwise

it should display

Country name does not exist

Program:

import java.util.*;

class countries

{

String coun[];

String capitals[];

int n;

void input()

{



System.out.println("Enter the number of countries you want to enter");

n=d.nextInt ();

coun=new String[n];

capitals=new String[n];

System.out.println("Enter the name of countries along with their capitals");

for(int j=0;j


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System.out.println("Country name");

coun[j]=d.next();

System.out.println("Capital");

capitals[j]=d.next();

}

}

void search(String lm)

{

int i=0;

int k=0;

for(i=0;i


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System.out.println("Capital "+capitals[i]);

}

else

System.out.println("Country name does not exist");

}

public static void main(String[]args)

{

countries ob=new countries();

ob.input();


System.out.println("Enter the name of country to be searched");

String s=d.nextLine();

ob.search(s);

}}


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Program 13: Design a class change to convert a decimal number to

its equivalent in base 16 and to convert it back to its decimal form.

Eg.(i)The decimal number 35 is 23 in base 16.(ii)The number 107 is 6B in base 16.

Some of the members of the class are given below:

Class name : change

Data members/instance variables:

a[] : int eger type array

n : int eger to be converted to base 16

Member functions/methods:

change( ) : Constructor to assign 0 to instance variables

void input( ) : accepts int eger to be converted to base 16

void hexadeci(int ): to convert decimal int eger n to hexadecimal form

void decihexa( ) : to convert hexadecimal number back to decimal form.

Program:

import java.util.*;

class change

{

int a[];

static int n;

private final char[] DIGIT_TABLE={ '0','1','2','3','4','5','6','7','8','9',

'A','B','C','D','E','F','G','H','I','J',

'K','L','M','N','O','P','Q','R','S','T',

'U','V','W','X','Y','Z'};


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String hexnum;

public change()

{

a=new int [15];

n=0;

for(int i=0;i


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if(hexnum==null)

hexnum=String.valueOf(DIGIT_TABLE[n1%16]);

else

hexnum=hexnum+DIGIT_TABLE[n1%16];

}

public void input()

{

Scanner d= new Scanner(System.in);

System.out.println("Enter Integer:");

try

{

n= d.nextInt ();

}

catch(Exception e)

{

System.out.println(e);

}


}

public void decihexa()

{

int len =hexnum.length();

char ch;

int hexplacevalue=0,hexmul=1;


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long decnum=0;

int n1=0,k=0;

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

{

ch=hexnum.charAt(i);

switch(ch)

{

case 'A': n1=10;break;

case 'B': n1=11;break;

case 'C': n1=12;break;

case 'D': n1=13;break;

case 'E': n1=14;break;

case 'F': n1=15;break;

default: n1=Integer.parseInt(String.valueOf(ch));break;

}

if(hexplacevalue==0)

decnum=decnum*10+1*n1;

else

decnum=hexmul*n1+decnum;

hexmul*=16;

hexplacevalue++;

}

System.out.println(hexnum+" Converted back to decimal as "+decnum);

}

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


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{

change ob=new change();


ob.input();

System.out.println("OUTPUT");

ob.hexadeci(n);


ob.decihexa();

}

}


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Program 14: Write a program to enter all the elements of an integer

array at runtime. Now, by using binary search method (recursive

function) find a particular value entered by the user.

Program:

import java.util.*;

public class BinarySearchRecursive

{

static int A[]; int size=0,M=0;

void input()throws Exception

{


System.out.print("Enter the size of the Array to be Searched : ");

size=d.nextInt();

A=new int[size];

System.out.println("Enter elements of the array");

for(int i=0;i


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void sort()

{

int temp,small,pos;

for(int i=0;i


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{

if(L


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obj.BinSearch(a,0,(A.length-1));

}

}


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Program 15:PalPr ime Numbers. Palprime numbers are palindromic

prime numbers i.e.,the prime numbers that are palindrome also.

Class Name: PalPrime

Member functions:

GenPalPrime(int n) : The passed number n tells the number of digits in the

palprime to be generated. Acceptable values for n are 2-5

You may define additional methods,if needed.

Program:

import java.util.*;

class PalPrime

{

public static boolean IsPrime(int n)

{

int mid = n/2;

for(int i=2;i


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int n1,rev=0,r;

n1=n;

while(n1!=0)

{

r=n1%10;

rev=rev*10+r;

n1=n1/10;

}

if(rev==n)

return true;

else

return false;

}

public static void GenPalPrime(int n){

int count=0;

if(n==2)

{

System.out.println("11");

count++;

}

else if(n==3)

{


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int n1=101,nn;

for(int n2=2;n2


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}

}

}

else if(n==5)

{

int n1=10001,nn;

for(int n2=100;n2=2&&n


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}


{



System.out.println("Enter the width of palprime numbers(ie no. of digits in a

palprime number )");

int n=d.nextInt ();

System.out.println("\nOUTPUT:");System.out.println("Palprime numbers are: ");

GenPalPrime(n);

}

}


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Program 16: Bruns Constant. Twin primes are the prime numbers

with a difference of 2e.g.,(3,5),(5,7),(7,11),(11,13),(17,19),(29,31).etc.

The sum of reciprocals of the twin primes converges to a sum, know asBruns

Constant i.e.,

The class Primes below contains methods which help you work with

twin primes and Bruns constant.Study theclass and then answer

the questions that follow:

Class :Primes

Public Member Functions :

Boolean Is Prime(int n) :returns true if n is a prime number, false otherwise

void twinPrimes(int lim) : print s out twin primes in pairs.

double BrunConstant(int lim) : calculates and returns Bruns constant below lim

Program :

import java.util.*;

class Primes

{

public boolean IsPrime(int n)

{

int mid=n/2;

for(int i=2;i


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return false;

}

}

return true;

}

public void twinPrimes(int lim)

{

for(int i=3;i


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System.out.print ("+(1/"+i+"+1/"+(i+2)+")");

}

}


return s;

}


{

Primes pr=new Primes();


int n=0;


System.out.print ("Enter limit: ");

n=d.nextInt ();System.out.println("OUTPUT");

double brun=pr.BrunConstant(n);

System.out.println("Brun's constant below limit i.e. "+n+" is :"+brun);

}

}


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Program 17: A super class Workerhas been defined to store the

details of a worker. Define a subclass Wagesto compute the monthly

wage for the worker. The details/specifications of both the classes

are given below:Class name Worker

Data Members/instance variables :

Name : to store the name of the worker

Basic : to store the basic pay in decimals

Member functions

Worker(.) : Parameterized constructor to assign values to the instance

variables .

void display : to display the workers details

Class Name Wages

Data members/instance variables:

hrs : stores the hours worked

rate :stores rate per hour

wage :stores the overall wage of the worker

Member functions:

Wages() :Parameterized constructor assign values to the instance

variables of both the classes

double overtime() :Calculates and returns the overtime amount as(hours*rate)

void display :Calculates the wage using the wage=overtime

amount+Basic pay and displays it along with other

details.


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super(nm,bas);

hrs=hr;

rate =rt;

}

double overtime()

{

return hrs*rate;

}

void display()

{


super.display();

wage= overtime()+Basic;

System.out.println("\nOUTPUT:");System.out.println("Hours Worked :"+ hrs);

System.out.println("Rate :"+rate);

System.out.println("Wage :"+wage);

}

}

public class finalres

{


{


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Program 18 : A class Employee contains employee details and

another class Salary calculates the employees net salary.The details

of the two classes are given below:

Class Name : Employee

Data members

empNo : stores the employees number

empName : stores the employees name

empDesign : stores the employees designation

Member functions :

Employee() : default constructor

Employee(..) : parameterized constructor to assign values to employee

number ,name and designation.

void display() : display the employees details

Class name : Salary

Data member

basic : float variable to store the basic pay

Member functions :

Salary(.) : parameterized constructor assign values to data members

void calculate() : calculate the employee salary according to following rules:

DA =10%of basic, HRA=15%of basic, Salary =basic +DA+HRA, PF =8% of

Salary, Net salary=Salary- PF

Display the employee details and the Net salary.


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Program:

class Employee

{

int empNo;

String empName;

String empDesig;

public Employee()

{

empNo=0;

}

public Employee(int eno,String ename,String edesig)

{

empNo=eno;

empName=ename;empDesig=edesig;

}

public void display()

{

System.out.println("Employee No.:"+ empNo);

System.out.println("Employee Name :"+empName);

System.out.println("Employee Designation:"+empDesig);

}

}


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class Salary extends Employee

{

float basic;

public Salary(int eno,String enm,String edg,float bas)

{

super(eno,enm,edg);

basic=bas;

}

public void calculate()

{

float salary,netsalary;

float DA,HRA,PF;

DA=basic*0.10f;

HRA=basic*0.15f;PF=basic*0.08f;

salary=basic+DA+HRA;

netsalary=salary-PF;


super.display();


System.out.println("Net salary: "+netsalary);

}

}


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public class Test

{

public static void main(String[]args)

{

Salary s1=new Salary(234,"Reva","Mgr",13000);

s1.calculate();

}

}


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Program 19:Write a program to print the sum of the following

series:-

Sum=1-x+x4/3!-x

7/6!+x

10/9!.........................upto n terms.

Program:

import java.util.*;

class series

{

static int fact(int c)

{

int f=1;

for(int i=1;i


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n=d.nextInt ();

System.out.println("Enter the value of x");

x=d.nextInt ();

double s=0,a,b;

for(int j=1;j


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Program 20:Write a program to print the primorial of 1-100

numbers.For Example: 5#= 2*3*5=30

Program:

import java.util.*;

public class primorial

{

public int num=0;

}

public void findprimorial(int num)

{

int res=2,flag=0;

String str="2";

for(int i=3;i


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}

if(flag!=1)

{

res*=i;

str=str+ "*" +i;

}

}

System.out.println(num +"= " +str +"=" +res);

}


{

primorial ob=new primorial();


System.out.println("INPUT");System.out.println("Enter a number");

int n= d.nextInt();


ob.findprimorial(n);

}

}


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PROGRAM NO. 21 : Write a program to enter all the array

elements at run time in an input function named void input().Do the

following tasks using different functions.

Reverse(): to reverse all the array elements by using the same array.

Delete(): to delete one elements from the array by specifying the position.

Prime(): to print all prime elements from the array.

Program:

import java.util.*;

class arrays

{

int n;

int arr[];

int ar[];

void input()

{


System.out.println("Enter the size of array");

n=d.nextInt();

arr=new int[n];

System.out.println("Enter the elements of array");for(int a=0;a


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}

ar=new int[n-1];

}

void reverse()

{

int temp=0;

for(int a=0;a


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int b=d.nextInt();

for(int a=0;a


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int m=ar[a];

for(int i=1;i


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Program 22:A class Mixer has been defined to merge two sorted integer arrays

in ascending order.Some of the members of the class are given below:

Data Members:

int arr[] :to store elements of the array

int n :to store size

Member functions:

Mixer(int nn) :constructor to assign n=nn.

void accept() :to accept the elements of the array in

ascending order without any duplicates.Mixer mix(Mixer A) :to merge the current object array elements with the

parameterized array elements and return the resultant object.

void display() :to display the elements of the array.

Program

import java.util.*;

class Mixer{

private int arr[ ];

private int n;

public Mixer( int nn ){

n = nn;

arr = new int[ n ];

}

public void accept(){


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Scanner sc = new Scanner( System.in );

for( int i=0; i< n; i++ ){

arr[ i ] = sc.nextInt();

}

}

public Mixer mix( Mixer A ){

Mixer ans = new Mixer( this.arr.length + A.arr.length );

int p1, p2, p3;

p1 = p2 = p3 = 0;

while( p1 < this.arr.length && p2 < A.arr.length ){

if( this.arr[ p1 ] < A.arr[ p2 ] ){

ans.arr[ p3++ ] = this.arr[ p1++ ];

}else{

ans.arr[ p3++ ] = A.arr[ p2++ ];}

}

if( p1 < this.arr.length ){

for( int i = p1 ; p1 < this.arr.length; i++ ){


}

}else if( p2 < A.arr.length ){

for( int i = p2 ; p2 < A.arr.length; i++ ){



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}

}

return ans;

}

public void display(){

for( int i=0; i < arr.length; i++ ){

System.out.print( arr[i] + " " );

}


}

public static void main( String args[] ){

Mixer obj1 = new Mixer(5);

Mixer obj2 = new Mixer(3);

obj1.accept();obj2.accept();

Mixer obj3 = obj1.mix( obj2 );

obj3.display();

}

}


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Program 23: A magic number is a number in which the eventual sum

of digits if the number is equal to 1.

Design a class magic to check if a given number is a magic number. Some of the

members of the class are given below:

CLASS NAME : Magic

DATA MEMBERS:

n :stores the number

MEMBER FUNCTIONS:

Magic() :constructor to assign 0 to n

void getnum(int nn) :to assign parameter value to the number, n=nn

int Sum_of_digits(int) :returns the sum of the digits of a number

void ismagic() :checks if the given number is a magic number by calling

the function Sum_of_digits(int) and displays appropriate

message.

Specify the class Magic giving details of the constructor, void getnum(int), int

Sum_of_digits(int) and void ismagic().

Program:

import java.util.*;

class Magic

{

int n;

Magic()

{


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n=0;

}

void getnum(int nn)

{

n=nn;

}

int sum_of_digits(int num)

{

int d=0, sum=0;

while(num>0)

{

d=num%10;

sum=sum+d;

num=num/10;}

return sum;

}

void ismagic()

{

int num;

int sum= sum_of_digits(n);

while(sum>9)

{


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num=sum;

sum=sum_of_digits(num);

}

if(sum==1)

System.out.println(n + " is a Magic Number.");

else

System.out.println(n+ " is not a Magic Number.");

}

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

{


Magic ob = new Magic();

System.out.println("Enter Number");

int a= d.nextInt();ob.getnum(a);

ob.ismagic();

}

}


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Program 24: A class Collection contains an array of 100 integers.

Using the following class description create an array with common

elements from two integer arrays. Some of the members if the class

are given below:CLASS NAME :Collection

DATA MEMBERS:

arr[] : integer array

len :length of the array

MEMBER FUNCTIONS:

Collection() :default constructor

Collection(int) :Parameterized constructor to assign the length of

the array

void inparr() :to accept the array elements

Collection common(Collection) :returns a Collection containing the common

elements of current Collection object and thecollection object passed as parameter

void arrange :sort the array element of the object containing

common elements in ascending order using any

sorting technique

void display() :displays the array elements

Specify the class Collection giving details of the constructors, void

inparr() and void arrange(), Collection common(Collection).

Program:

import java.util.*;

public class Collection


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{

int arr[];

int len;

public Collection()

{

arr= new int[100];

len=100;

}

public Collection(int size)

{

arr=new int[size];

len=size;

}

public void inputarr(){


int val=0;

for(int i=0; i


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}

catch(Exception e)

{

System.out.println("error in reading/ invalid integer");

}

arr[i]= val;

}

}

private void setLength(int le)

{

len=le;

}

public Collection common(Collection c2)

{Collection c3= new Collection();

int val;

int k=0;

for(int i=0; i


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{

c3.arr[k]=val;

k++;

}

}

}

c3.setLength(k);

return c3;

}

public void display()

{

System.out.println("Common Elements");

for(int i=0;i=0; i--)

{

int highestIndex=i;


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for(int j=1; j>=0; j--)

{

if(arr[j]>arr[highestIndex])

highestIndex=j;

}

int temp=arr[i];

arr[i]=arr[highestIndex];

arr[highestIndex]= temp;

}

}

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

{

Collection c=new Collection();

Collection c1=new Collection(5);Collection c4=new Collection(5);


c1.inputarr();

c4.inputarr();

Collection c5=c1.common(c4);

c5.arrange();


c5.display();

}


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}


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Program 25: Design a class Change to perform string related

operations. The details of the class are given below:

CLASS NAME :Change

DATA MEMBERS:

str : stores the word

newstr :stores the changed word

len :stores the length of the word

MEMBER FUNCTIONS:

Change() :default constructor

void inputword() :to accept a word

char caseconvert(char ch) :converts the case of the character and returns it

void recchange(int) :extracts character using recursive technique and

changes its case using caseconvert() and forms a new

word

void display() :displays both the words

Specify the class Change giving details of the constructor, and

member functions void inputword(), char caseconvert(char ch), void

recchange(it) and void display().

Program:

import java.util.*;

class Change

{

String str, newstr;

int len;


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Change()

{

str=new String();

newstr=new String();

len=0;

}

void inputword()

{


str= d.nextLine();

len=str.length();

}

char caseconvert(char ch)

{int asc= (int) ch;

if(asc>=65 && asc=97 && asc


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{

if(n==len)

return;

else

{

newstr = newstr+ caseconvert(str.charAt(n));

recchange(n+1);

}

}

void display()

{

System.out.println("String : " + str);

System.out.println("Changed String : " + newstr);

}public static void main(String[]args)

{

Change object= new Change();

System.out.println("Enter Word : ");

Comp Project Final

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