NPTEL Programming in Java Week1 Programming Assignment Solutions 2021 | Swayam

 

Week-1

Ans of Question - 1

Programme file name - Exercise1.java

import java.util.Scanner;

public class Exercise1

{

    public static void main(String[] args)

    {

       Scanner s =new Scanner(System.in);

       double rad=s.nextDouble();

       double para;

       double area;

       if(rad<=0)

       {

           System.out.println("Please enter non zero positive number");

       }else

       {

           para=2*Math.PI*rad;

           area=Math.PI*rad*rad;

           System.out.println(para);

           System.out.println(area);

       }

    }

}

Ans of Question - 2

Programme file name – Exercise2.java

 public class Exercise2

{

    public static void main(String[] args)

    {

        Scanner s=new Scanner(System.in);

        int x=s.nextInt();

        int y=s.nextInt();

        int z=s.nextInt();

        int res=0;

        if(x >= y && x >= z)

        {

            res=x;

        }

        else if(y >= z)

        {

            res = y;

        }

        else{res=z;}

        System.out.println(res);

    }

}

 

Ans of Question - 3

Programme file name – Exercise3.java

 

import java.util.Scanner;

public class Exercise3

    {    

    public static void main(String[] args)          

    {              

        Scanner s=new Scanner(System.in);               

        int n=s.nextInt();             

        int sum=0;             

        int res=1;             

        int i=0;                          

        while(res<=n)              

        {

            if(i%2==0)                 

            {                      

                if(i%3==0)                                             

                {                        

                    sum=sum+i;                      

                }                    

                res=res+1;                  

            }                  

            i=i+1;               

        }               

        System.out.println(sum);           

    }      

}

Ans of Question - 4

Programme file name – Exercise4.java

import java.util.Scanner;

public class Exercise4

    {     

    public static void main(String[] args)           

    {               

        Scanner s=new Scanner(System.in);                

        int n=s.nextInt();

        int res=0;

        int temp=n;

        int c=0,t;

        while(n>0)

        {

            t=n%10;

            n=n/10;

            c=c+(t*t*t);

        }

        if(temp==c)

        {

            res=1;

        }else{res=0;}

        System.out.println(res);

    }       

}

Ans of Question - 5

Programme file name – Exercise5.java

import java.util.Scanner;

public class Exercise5

    {     

    public static void main(String[] args)           

    {               

        Scanner sc=new Scanner(System.in);                

        double mark_avg;

        int res;

        int i,s;

        s=sc.nextInt();

        int[] arr=new int[s];

        for(i=0;i<arr.length;i++)

        {

            arr[i]=sc.nextInt();

        }

        int max =arr[0];

        double sum=arr[0];

        for(i=1;i<arr.length;i++)

        {

            sum=sum+arr[i];

            if(arr[i]>max)

                max=arr[i];

        }

        res=max;

        mark_avg=sum/(arr.length);

        System.out.println(res);

        System.out.println(mark_avg);

    }       

}