Floyd Triangle Algorithm
Summing up the row sums in Floyd's triangle reveals the doubly triangular numbers (triangular numbers with an index that is triangular)(sequence A002817 in the OEIS)Floyd's triangle is a right-slant triangular array of natural numbers, used in computer science education.
package Others;
import java.util.Scanner;
class FloydTriangle {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows which you want in your Floyd Triangle: ");
int r = sc.nextInt(), n = 0;
sc.close();
for (int i = 0; i < r; i++) {
for (int j = 0; j <= i; j++) {
System.out.print(++n + " ");
}
System.out.println();
}
}
}
