Programming in Java | NPTEL 2022 | Week 8 Programming Assignments Solutions

This article will help you with the answers of Programming in Java NPTEL 2022 Week 8 Programming Assignment Solutions.

Programming in Java NPTEL Week 8 Programming Assignment 1 Solutions

Write a program which will print a pyramid of “*” ‘s of height “n” and print the number of “*” ‘s in the pyramid.

import java.util.*;
public class Pattern1 {
    public static void main(String[] args) {
        Scanner inr = new Scanner(System.in);
	   int n = inr.nextInt();
        // Add the necessary code in the below space
      
      int a = 0, sum = 0;
      for(int i=1; i<=n; ++i) {
        a=0;
        for(int j=1; j<=n-i; ++j) {
          System.out.print("  ");
        }
        while(a!=2*i-1) {
          System.out.print("* ");
          sum++;
          ++a;
        }
        System.out.println();
      }
      System.out.println(sum);
    }
}

Programming Assignment 2 Solution

Write a program which will print a pascal  pyramid of  “*” ‘s of height “l” .

import java.util.*;
public class Pattern2 {
    public static void main(String[] args) {
        Scanner inr = new Scanner(System.in);
	    int l = inr.nextInt();
        // Add the necessary code in the below space

      int space = l - 1;
      
      for(int i=0; i<l; i++) {
        for(int j=0; j<space; j++) {
          System.out.print(" ");
        }
        for(int j=0; j<=i; j++) {
          System.out.print("* ");
        }
        System.out.println();
        space--;
      }
    }
}

Programming Assignment 3 Solution

Write a program which will print a pyramid of “numbers” ‘s of height “n” and print the sum of all number’s in the pyramid.

 import java.util.*;
  public class Pattern3 {
    public static void main(String[] args) {
        Scanner inr = new Scanner(System.in);
	   int n = inr.nextInt();
        // Add the necessary code in the below space
      int num, sum = 0;
      for(int i=1; i<=n; i++) {
        num=1;
        for(int j=1; j<=n-i; j++) {
          System.out.print("  ");
        }
        while(num <= 2*i-1) {
          System.out.print(num + " ");
          sum = sum + num;
          num++;
        }
        System.out.println();
      }
      System.out.println(sum);
    }
  }

Week 8: Programming Assignment 4 Solution

Write a program to print symmetric Pascal’s triangle of “*” ‘s of  height “l” of odd length . If input “l” is even then your program will print “Invalid line number”.

import java.util.*;
public class Pattern4 {
    public static void main(String[] args) {
        Scanner inr = new Scanner(System.in);
	  int l = inr.nextInt();
        // Add the necessary code in the below space

      int ul=0, ll=0; 	
	  if (l%2!=0) {
	   ul = (l/2)+1;			
	   ll=l-ul;
        for(int i=1;i<=ul;i++) {	
          for(int j=1;j<=(ul-i); j++) {
	    	System.out.print(" ");
		  }
	
	   	  for(int j=1;j<=i; j++){
	    	 System.out.print("* ");
	      }
		 System.out.println();
	  }
			
	
	int c=ll;
	for(int i=1;i<=ll; i++) {
      for(int j=c;j<ll; j++) {
	     System.out.print(" ");
	  }
	
	  for(int j=1;j-1<=ll-i; j++) {
	     System.out.print(" *");
	  }
	 c--;
	 System.out.println();
     }
	}
    else {
	   System.out.print("Invalid line number");
	}

    }
}

Week 8: Programming Assignment 5 Solution

Write a program to display any digit(n) from 0-9 represented as a “7 segment  display”. 

import java.util.*;
public class Pattern5 {
   public static void main(String[] args) throws Exception {
           Scanner inr = new Scanner(System.in);
	      int n = inr.nextInt();
           // Add the necessary code in the below space    

     if(n==2 || n==3 || n==5 || n==6 || n==7 || n==8 || n==9 || n==0)
       System.out.println(" _ ");
     else
       System.out.println("  ");
     
     if(n==1 || n==7)
       System.out.println("  |");
     else if(n==2 || n==3)
       System.out.println(" _|");
     else if(n==4 || n==8 || n==9)
       System.out.println("|_|");
     else if(n==5 || n==6)
       System.out.println("|_ ");
     else
       System.out.println("| |");
       
     if(n==1 || n==4 || n==7)
       System.out.println("  |");
     else if(n==3 || n==5 || n==9)
       System.out.println(" _|");
     else if(n==6 || n==8 || n==0)
       System.out.println("|_|");
     else
       System.out.println("|_ ");
       }
}

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