Programming In Java Week 1: Programming Assignments Jan-Jun 2022

NPTEL PROGRAMMING ASSIGNMENTS

Programming In Java

Week 1: Programming Assignment 1

Due Date of Submission 2022-02-10, 23:59 IST

Complete the code segment to find the perimeter and area of a circle given a value of radius.

You should use Math.PI constant in your program. If radius is zero or less than zero then print " please enter non zero positive number ". 

import java.util.Scanner;  

public class Exercise1_1 {

       public static void main(String[] args) {

Scanner s = new Scanner(System.in); 

       double radius= s.nextDouble();

       double perimeter;

       double area;

--Solution-- 

  if(radius>=0) { perimeter = 2 * Math.PI * radius; area = Math.PI * radius * radius; System.out.print(perimeter+"\n"+area); }

Week 1 : Programming Assignment 2

Due Date of Submission 2022-02-10, 23:59 IST

Complete the code segment to find the largest among three numbers x,y, and z. You should use if-then-else construct in Java.

import java.util.Scanner;  
public class Exercise1_2 {
       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 result = 0;

--Solution-- 

  if(x >= y && x >= z) { result=x; } else if(y >= z) { result=y; } else { result=z; } System.out.print(result);

Week 1 : Programming Assignment 3

Due Date of Submission 2022-02-10, 23:59 IST

Consider First n even numbers starting from zero(0).Complete the code segment to calculate sum of  all the numbers divisible by 3 from 0 to n. Print the sum.

Example:

Input: n = 5

-------
0 2 4 6 8
Even number divisible by 3:0 6
sum:6

import java.util.Scanner;
public class Exercise1_3 {
       public static void main(String[] args) {
   Scanner sc = new Scanner(System.in);
   int n=sc.nextInt();
  int sum=0;

--Solution-- 

  int result=1; int i=0; while(result<=n) { if(i%2==0) { if(i%3==0) { sum=sum+i; } result=result+1; } i=i+1; } System.out.print(sum);

Week 1 : Programming Assignment 4

Due Date of Submission 2022-02-10, 23:59 IST

Complete the code segment to check whether the number is an Armstrong number or not.

Armstrong Number:

A positive number is called an Armstrong number if it is equal to the sum of cubes of its digits

 for example 153 = 13+53+33, 370, 371, 407, etc.

import java.util.Scanner;
public class Exercise1_4 {
    public static void main(String[] args) {
   Scanner sc = new Scanner(System.in);
   int n=sc.nextInt();
           int result=0;

--Solution-- 

  int temp=n; int c=0,t; //Use while loop to check the number is Armstrong or not. while(n>0) { t=n%10; n=n/10; c=c+(t*t*t); } if(temp==c) result=1; else result=0; //Evaluation code System.out.print(result);

Week 1 : Programming Assignment 5

Due Date of Submission 2022-02-10, 23:59 IST

Complete the code segment to help Ragav , find the highest mark and average mark secured by him in "s" number of subjects.

import java.util.Scanner;
public class Exercise1_5{
    public static void main(String[] args) {
Scanner input = new Scanner(System.in);
         double mark_avg;
         int result;
         int i;
         int s;
      //define size of array
       s = input.nextInt();
     //The array is defined "arr" and inserted marks into it.
      int[] arr = new int[s];   
      for(i=0;i<arr.length;i++)
  {
arr[i]=input.nextInt();
        }

--Solution-- 

  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]; } result=max; mark_avg=sum/(arr.length); System.out.print(result+"\n"+mark_avg);