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Print Pascals triangle using java program

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instanceof java

Posts: 576
Nickname: instanceof
Registered: Jan, 2015

instanceof java is a java related one.
Print Pascals triangle using java program Posted: Aug 13, 2016 11:49 AM
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This post originated from an RSS feed registered with Java Buzz by instanceof java.
Original Post: Print Pascals triangle using java program
Feed Title: Instance Of Java
Feed URL: http://feeds.feedburner.com/blogspot/TXghwE
Feed Description: Instance of Java. A place where you can learn java in simple way each and every topic covered with many points and sample programs. 		Latest Java Buzz Posts
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Advertisement
  • Pascals triangle means arranging numbers in pascal triangle format.
  • First row starts with number 1.
  • Here is the pascal triangle with 8 rows.



  •  The sum of all numbers in each row will be double the sum of all numbers in above row
  •  The diagonals adjacent to the border diagonals of 1's contains natural numbers in order


 Program #1: Java example program to print  numbers in pascals triangle pattern.

  1. package interviewprograms.instanceofjava;

  3. import java.util.Scanner;
  4. /*
  5.  * www.instanceofjava.com
  6.  */
  7. public class PasclasTriangleProgram {

  9. public static void main(String args[]){
  11. Scanner in = new Scanner(System.in);
  12. System.out.println("Enter number of rows ");

  14. int rows= in.nextInt();

  16.  for(int i =0;i<rows;i++) {

  18.         int number = 1;
  19.   
  20.   System.out.format("%"+(rows-i)*2+"s","");

  22.  for(int j=0;j<=i;j++) {

  24.     System.out.format("%4d",number);

  26.       number = number * (i - j) / (j + 1);

  28. }

  30.   System.out.println();

  32. }

  34. }
  35. }        

Output:

  1. Enter number of rows 
  2. 8
  3.                    1
  4.                  1   1
  5.                1   2   1
  6.              1   3   3   1
  7.            1   4   6   4   1
  8.          1   5  10  10   5   1
  9.        1   6  15  20  15   6   1
  10.      1   7  21  35  35  21   7   1

1.Pattern Programs in java Part-1

2.Pattern Programs in java Part-2

3.Pattern Programs in java Part-3 

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