SHIWALIK INTERNATIONAL SCHOOL

COMPUTER APPLICATION
COMPUTER PROGRAMS
ARMAAN SINGH
7/6/2019
1. W.A.P to find the vale of t.
import java.io.*;
public class A
{
public static void main(String args [])
{
int sum=0,score=0;
double t;
do
{
score=score+1;
sum=sum+score;
}while(score<=3);
t=sum/3;

System.out.println("The value of t is : "+t);

}
}
 1. W.A.P to print the tables of 2,3,4
public class aaa
{
public static void main(String args[])
{
int i,j;
for(i=2;i<=4;i++)
{
for(j=1;j<=10;j++)
{
System.out.println(i+" * " + j+" = " +(i*j) + " ");
}
System.out.println(" ");
}
}
}
3.A program to show the use of Mathematical functions
import java .io.*;
import java.lang.*;
class abc
{
public static void main (String args[ ] )
{
double m=-6.25;
double n=8.75;
System.out.println("The output of diff mathematical func are");
System.out.println("Sqrt of 6.25 "+Math.sqrt(m));
System.out.println("Min value between 6.25 and 8.75= "+Math.min(m,n));
System.out.println("Max value between 6.25 and 8.75= "+Math.max(m,n));
System.out.println("6.25 raised to the power 3 =" +Math.pow (m,3));
System.out.println(" natural log of 6.25 ="+Math.log (m));
System.out.println ("absolute value of (6.25-8.25)= "+(float) Math.abs(m-n));
System.out.println("rounded value of 6.25= "+Math.round (m));
System.out.println("the floor of 6.25= "+Math.floor(m));
System.out.println("the ceil value of 6.25= "+Math.ceil(m));
System.out.println("truncated value of 6.25= "+Math.rint(m));
System.out.println("exponent value of 6.2= "+Math.exp(m));
}}
4.To arrange the value of array in ascending order

import java.io.*;
public class acending
{
public static void main(String args[])throws IOException
{
InputStreamReader read= new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int a,b,c,i,j,t,min;
int m[ ] = new int[10];
for( i=0;i<10;i++)
{
System.out.println("Enter the number in the cell");
m[i]= Integer.parseInt(in.readLine());
}
for(i=0;i<9;i++)
{
min=i;
for(j=i+1;j<10;j++)
{
if(m[j]<m[min])
min=j;
}
t=m[i];
m[i]=m[min];
m[min]=t;
}
System.out.println("The numbers are arranged in ascending order as");
for(i=0;i<10;i++)
System.out.println(m[i]);
}
}
5.Program to print pattern of alphabets

public class asd

{
public static void main(String args[])
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++)
{
System.out.print((char)(64+i)+" ");
}
System.out.println(" ");
}
}
}
6. W.A.P to reverse the case of each alphabet of given string.

import java.io.*;
public class Change
{
public static void main(String args[])throws IOException
{
InputStreamReader read= new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
String name,name1; name1=" ";
char chr,chr1; chr1=' ';
int a,i;
System.out.println("Enter your word");
name=in.readLine();
a=name.length();
for(i=0;i<a;i++)
{
chr=name.charAt(i);
if(chr>='A' && chr<='Z')
{
chr1=Character.toLowerCase(chr);
name1=name1+chr1;
}
else
{
if(chr>='a' && chr<='z')
{
chr1=Character.toUpperCase(chr);
name1= name1+chr1;

}
else
name1= name1+chr;
}
}
System.out.println(name1);
}
}
7. W.A.P to check the working of String function.
import java.io.*;
public class check
{
public static void main(String args[])
{
String x= "computer";
String y= "Applications";
System.out.println(y+x.substring(5));
System.out.println("Four"+(2+2));
char ch = "computer".charAt(3);
System.out.println(ch+" ");
}
}
8. Program to print the sum according to users choice.

import java.io.*;
public class choice
{
public static void main(String args[]) throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int n,y=0,a=0,b=0;
System.out.println("Enter a Positive or a Negative number");
n= Integer.parseInt(in.readLine());
if(n>0)
{
for(a=2;a<=1000;a++)
{
if (a%2==0)
{
y= y+a;
}
}
System.out.println("Sum of positive ="+y);
}
if(n<0)
{
for(a=-1000;a<0;a--)
{
if ( n%2==0)
{
b=b+n;
}
}
System.out.println("Sum of negative ="+b);
}
}
}
9. Program to count the number of spases words and alphabets in a string.

import java.io.*;
public class counting
{
public static void main(String args[])throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
String name;
int a,i,b,w; b=0; w=0;
char chr;chr=0;
System.out.println("Enter your string");
name=in.readLine();
a=name.length();
for(i=0;i<a;i++)
{
chr=name.charAt(i);
if(chr==' ')
b=b+1;
}
w=b+1;
System.out.println("The no.of blanl spaces in the string is "+b);
System.out.println("The no.of words in the string is "+w);
System.out.println("The no. of alphabet in the string is "+(a-b));
}
}
10. Program to print the sum of the series
import java.io.*;
class cricket
{
public static void main (String args []) throws IOException
{
BufferedReader Br= new BufferedReader ( new InputStreamReader
(System.in));
int i,a,n;
double s=0;
System.out.println ("Enter the value of a and n");
a=Integer.parseInt(Br.readLine());
n=Integer.parseInt(Br.readLine());
for(i=1;i<n;i++);
s=s+(double) a/(i+1) ;
System.out.println(s+" sum of series is " );
}
}
11. Program to print the pattern
import java.io.*;
class cross
{
public static void main(String args[ ])
{
for (int i=1;i<=5;i++)
{
for(int k=5;k>i;k--)
System.out.print(" ");
for(int j=1;j<=i;j++)
System.out.print(j + " ");
System.out.println(" ");
}
}
}
12.Program to print the sum of the values of array.

public class ddsum

{
public static void main(String args[])
{
int i,j,s; s=0;
int m[ ][ ]={{3,4,5,6},{7,8,9,10},{11,12,13,14}};
for(i=0;i<3;i++)
{
for(j=0;j<4;j++)
{s=s+m[i][j];
}
}
System.out.println("The sum of the elements in the Matrix is :"+s);
}
}
13. Program to check wheather a number id duck number or not.

import java.util.*;
class duck
{
public static void main (String args[])
{
Scanner in =new Scanner(System.in);
int d, n,f=0;
System.out.println("enter a number");
n=in.nextInt();
while(n!=0)
{
d=n%10;
if(d==0)
{
f++;
}
n=n/10;
}
if (f!=0)
System.out.println("Duck No");
else
System.out.println("Not Duck No");
}
}
14. Program to find the value of given data

import java.io.*;

public class expression

{
public static void main(String []args) throws IOException
{
int a,b;
double p;
InputStreamReader read= new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
System.out.println("Enter the value of a");
a= Integer.parseInt(in.readLine());
System.out.println("Enter the value of b");
b = Integer.parseInt(in.readLine());
p= Math.pow((a+b),3)/ (a-b);
System.out.println("The value of the expression ="+p);
}
}
15. Progra to find the factorial of the number.

class factorial
{
static int isfact (int x )
{
int f=1,i;
for (i=1;i<=x;i++)
f=f*i;
return (f);
}
public static void main(String args[])
{
int sb,n=5,m=8 ,pb;
sb= isfact (n);
pb= isfact (m);
System.out.println("the result is ="+sb);
System.out.println("the result is ="+pb);
}
}
16.To find the volume of a cube,a sphere and a cuboid using overloading

import java.util.*;
public class function
{
double vc=0,vs=0,vcd=0;
void volume(int s)
{
vc=s*s*s;
System.out.println("The volume of a cube ="+vc);
}
void volume(float r)
{
vs=(4/3)*(22/7)*r*r*r;
System.out.println("The volume of a sphere ="+vs);
}
void volume(int l,int b,int h)
{
vcd=l*b*h;
System.out.println("The volume of a cuboid ="+vcd);
}
public static void main(String args[ ])
{
Scanner in = new Scanner(System.in);
int a,b,c,d;
float k;
System.out.println("Enter the value of a,b,c,d and k");
a= in.nextInt();
b= in.nextInt();
c= in.nextInt();
d= in.nextInt() ;
k= in.nextFloat();
function ob= new function();
ob.volume(a);
ob.volume(k);
ob.volume(b,c,d);
}
}
17. Program to find the greatest number
public class greatest
{
public static void main(String args[])
{
int i,max=0;
int m[ ]={12,34,54,23,67,7,45,78,98,43};
for(i=0;i<10;i++)
{
if(max<m[i])
max=m[i];
}
System.out.println("The greatest number is "+max);
}
}
18 . To find GCD of two numbers

import java.io.*;
public class hcf
{
public static void main(String args[ ]) throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int n,m,i,p,h=0,l;
System.out.println("Enter two numbers");
m= Integer.parseInt(in.readLine());
n= Integer.parseInt(in.readLine());
p= m*n;
for(i=1;i<p;i++)
{
if(m%i==0 && n%i==0 )
{ h=i;
}
}
System.out.println("The GDC is = "+h);
}
}
19.

import java.io.*;
class interest
{
public static void main(String args[]) throws IOException
{
BufferedReader br= new BufferedReader (new InputStreamReader(System.in));
double i, p,a=0;
System.out.println("enter a sum");
p=Double.parseDouble(br.readLine());
i=p*0.05*1;
System.out.println("interest for first year "+i);
p=p+i;
i=p*0.05*1;
System.out.println("interest for second year "+i);
p=p+i;
i=0.05*p*1;
a=p+i;
System.out.println("amont after third year "+a);
}
}
20.

import java.io.*;
public class maxmin
{
public static void main(String args[]) throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int min,max,a,b,c;
System.out.println("Enter first number");
a= Integer.parseInt(in.readLine());
max=a; min=a;
for(b=1;b<=10;b++)
{
System.out.println("Enter you next nine choice");
c= Integer.parseInt(in.readLine());
if(min>c)
min=c;
if(max<c)
max=c;
}
System.out.println("The largest number is ="+max);
System.out.println("The smallest number id ="+min);
}
}
21. Find the maximum and minimum number.

import java.io.*;
public class maxmin1
{
public static void main(String args[])throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int max,min;
int m[ ]=new int[10];
for(int i=0;i<10;i++)
{
System.out.println("Enter the number in the cell");
m[i]= Integer.parseInt(in.readLine());
}
max=m[0]; min= m[0];
for(int a=0;a<10;a++)
{
if(max<m[a])
max=m[a];
if(min>m[a])
min=m[a];
}
System.out.println("The greatest number is "+max);
System.out.println("The lowest number is "+min);
}
}
22. Write a program to check wheather the number id palindrome or perfect
number according to user choice.

import java.io.*;
public class number
{
public static void main(String args[])throws IOException
{
InputStreamReader read= new InputStreamReader(System.in);
BufferedReader in= new BufferedReader(read);
int a,b,c,d,e=0,f=0;
System.out.println("Enter 1 to check a palindrome");
System.out.println("Enter 2 to check a perfect number");
a= Integer.parseInt(in.readLine());
switch(a)
{case 1:
System.out.println("Enter the number");
b= Integer.parseInt(in.readLine());
c=b;
do
{
d=b%10;
e=e*10+d;
b=b/10;
}while(b!=0);
if(e==c)
System.out.println("The number is Palindrome");
else
System.out.println("The number is not Palindrome");
break;
case 2:
System.out.println("Enter the number");
a= Integer.parseInt(in.readLine());
for(b=1;b<a;b++)
{if(a%b==0)
f=f+b;
}if(f==a)
System.out.println("The number is Perfect");
else
System.out.println("The Number is not Perfect");
break;
default:
System.out.println("It is a wrong choice");
}
}}
23. Pattern

import java.util.*;
class one
{
public static void main (String args[])
{
Scanner in =new Scanner (System.in);
int a,b;
String st;
System.out.println("enter your word to be print");
st=in.nextLine();
b=st.length();
for(a=b;a>=0;a--)
{
for(int i=0;i<a;i++)
{
System.out.print(st.charAt(i)+" ");
}
System.out.println(" ");
}
}
}
24. Pattern

import java.io.*;
public class patern
{
public static void main(String args[]) throws IOException
{
int a,b,p;
String st;
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
System.out.println("Enter the string");
st= in.readLine();
p= st.length();
for(a=0;a<=p;a++)
{
System.out.print(st.substring(a,p));
System.out.print(st.substring(0,a));
System.out.println();
}
}}
25. Pattern.

public class pattern1

{
public static void main(String args[])
{
int a,b, c;
for(a=1;a<=5;a++)
{
for(b=1;b<=a;b++)
{
System.out.print(b+" ");
}
System.out.println();
}
}
}
26.
public class pattern2
{
public static void main(String args[])
{
int a,b,c;
for(a=7;a>=1;a--)
{
for(b=1;b<=a;b++)
{
System.out.print(b+" ");
}
System.out.println();
}
}
}
27. Pattern

public class pattern3

{
public static void main(String args[])
{
int a,b,c,p=2;
for(a=1;a<=5;a++)
{
for(b=1;b<=a;b++)
System.out.print(a+" ");
for(c=p;c<=5;c++)
System.out.print(c+" ");
System.out.println();
p=p+1;
}
}
}
28. Programe to cheack wheather the number is prime or not.

import java.io.*;
public class Prime
{
public static void main(String args[]) throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int a,n,c=0;
System.out.println("Eneter the number");
n= Integer.parseInt(in.readLine());
for(a=2;a<=n;a++)
{
if(n%a==0)
{
System.out.println("Not a Prime Number");
break;
}

if(c==0)
{
System.out.println("Prime Number");
break;
}
}}}
29. Program to reverse the given string.

import java.io.*;
public class Reverse
{
public static void main(String args[])throws IOException
{
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int i,j,d;j=0;
char k;
String m,p,t; p="";t="";
String n[]=new String[5];
System.out.println("Enter your word");
m=in.readLine();
d=m.length();
for(i=0;i<d;i++)
{k= m.charAt(i);
if(k!=' ')
t=t+k;
else
{
n[j]=t;
j=j+1;
t=" ";
}}
n[j]=t;
System.out.println("Your word displayed in reversed order is:");
for(i=j;i>=0;i--)
System.out.print(n[i]+" ");
}}
30. Program to search the number in the array.

import java.io.*;
public class search
{
public static void main(String args[])throws IOException
{
InputStreamReader read= new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
int x,k=0;
int m[] = new int[10];
for(int i =0;i<10;i++)
{
System.out.println("Enter the number in the cell");
m[i]= Integer.parseInt(in.readLine());
}
System.out.println("Enter the number you want to find");
x= Integer.parseInt(in.readLine());
for(int a=0;a<10;a++)
{if(x==m[a])
k=1;
}
if(k==1)
System.out.println("The number "+x+" is present ");
else
System.out.println("Number is not present");
}}