Programming In Java Week 8: Programming Assignments Jan-Jun 2022

  NPTEL PROGRAMMING ASSIGNMENTS

Programming In Java

Week 8 : Programming Assignment 1

Due Date of Submission 2022-03-24, 23:59 IST

Write a program which will print a pyramid of "*" 's of height "n" and print the number of "*" 's in the pyramid.

For example:

Input : 5

Output:  

        * 

      * * * 

    * * * * * 

  * * * * * * * 

* * * * * * * * * 

25

--Solution-- 

  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 z=1,sum=0; for(int i=1;i<=n;i++){ for(int j=1;j<=(2*n)-(2*i);j++){ System.out.print(" "); } for(int k=1;k<=z;k++){ System.out.print("* "); sum+=1; } z+=2; System.out.print("\n"); } System.out.println(sum); } }

Week 8 : Programming Assignment 2

Due Date of Submission 2022-03-24, 23:59 IST

Write a program which will print a pascal  pyramid of  "*" 's of height "l" .

For example:

input: 8

output :

       * 

      * * 

     * * * 

    * * * * 

   * * * * * 

  * * * * * * 

 * * * * * * * 

* * * * * * * * 

--Solution-- 

  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 for(int i=1;i<=l;i++){ for(int j=1;j<=l-i;j++){ System.out.print(" "); } for(int k=1;k<=i;k++){ System.out.print("* "); } System.out.print("\n"); } } }

Week 8 : Programming Assignment 3

Due Date of Submission 2022-03-24, 23:59 IST

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.

For example:

input: 5

output: 

        1 

      1 2 3 

    1 2 3 4 5 

  1 2 3 4 5 6 7 

1 2 3 4 5 6 7 8 9 

95

--Solution-- 

  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 z=1,sum=0; for(int i=1;i<=n;i++){ for(int j=1;j<=(2*n)-(2*i);j++){ System.out.print(" "); } for(int k=1;k<=z;k++){ System.out.print(k+" "); sum+=k; } z+=2; System.out.print("\n"); } System.out.println(sum); } }

Week 8 : Programming Assignment 4

Due Date of Submission 2022-03-24, 23:59 IST

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".

For example:

input : 5

output:

  *

 * *

* * *

 * *

  *

input : 6

output:

Invalid line number

--Solution-- 

  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 upp=0; // Upper Line int low=0; // Lower Line // Check whether line number is odd if (l%2!=0){ upp=(l/2)+1; low=l-upp; //Code for upper half for(int i=1;i<=upp;i++){ //Space management for(int j=1;j<=(upp-i);j++){ System.out.print(" "); } // Star management for(int k=1;k<=i;k++){ System.out.print("* "); } System.out.println(); } //Code for lower half int llow=low; for(int i=1;i<=low;i++){ //Space management for(int j=llow;j<low;j++){ System.out.print(" "); } // Star management for(int k=1;k-1<=low-i;k++){ System.out.print(" *"); } llow--; System.out.println(); } } else{ System.out.print("Invalid line number"); } } }

Week 8 : Programming Assignment 5

Due Date of Submission 2022-03-24, 23:59 IST

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

For example:

input : 5

output :

 _ 

|_ 

 _|

input : 4

output :

|_|

   |

--Solution-- 

  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 switch(n) { case 0: System.out.println(" _ \n| | \n|_|"); break; case 1: System.out.println(" \n |\n |"); break; case 2: System.out.println(" _ \n _|\n|_ "); break; case 3: System.out.println(" _ \n _|\n _|"); break; case 4: System.out.println("|_|\n |"); break; case 5: System.out.println(" _ \n|_ \n _|"); break; case 6: System.out.println(" _ \n|_ \n|_|"); break; case 7: System.out.println(" _ \n |\n |"); break; case 8: System.out.println(" _ \n|_|\n|_|"); break; case 9: System.out.println(" _ \n|_|\n _|"); break; } } }