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Write a program to generate this Pascal’s triangle in java.
>Each number present in row is sum of the left & right number in the above row.
>If there is no number in number in above, number is assumed as 0.
>First and last number in row is always 1.
>Sum of numbers in each row is equal to sum of numbers in above row.
Example / Full Program/SourceCode to generate Pascal’s triangle in java. >
package pyramid;
/*
*/
import java.util.Scanner;
/** Copyright (c), AnkitMittal JavaMadeSoEasy.com */
public class Pyramid8Pascal {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter no of rows in Pascal's triangle : ");
int rows = scanner.nextInt();
int nextNumber;
System.out.println("");
for (int i = 0; i < rows; i++) {
nextNumber = 1;
for(int k=0; k<(rows-i)*2; k++) //create (rows-i)*2 spaces, for initial spacing.
System.out.print(" ");
for (int j = 0; j <= i; j++) {
System.out.format("%4d", nextNumber); // %4d creates 4 space between number.
nextNumber = nextNumber * (i - j) / (j + 1);
}
System.out.println();
}
}
}
/* OUTPUT
Enter no of rows in Pascal's triangle : 6
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
*/
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So wrote a program to generate this Pascal’s triangle in java.
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