Triangle Number

Triangularnumber.java

package com.lp.mysample;

import java.math.BigInteger;

/**
 * @author lperumalm
 * @version 1.0 This class print Triangular number in matrix format, change
 *          dimension as your need See
 *          {@link https://www.mathsisfun.com/algebra/triangular-numbers.html} ,
 *          {@link https://en.wikipedia.org/wiki/Triangular_number}
 *
 */
public class Triangularnumber {

	public static void main(String[] args) {
		int dimension = 200;
		int value = 1;
		BigInteger number[][] = new BigInteger[dimension][dimension];

		for (int i = 0; i < dimension * dimension; i++) {
			for (int j = 0; j <= i; j++) {
				int k = i - j;
				if (k < dimension && j < dimension) {
					number[k][j] = BigInteger.valueOf(value++);
				}
			}
		}

		System.out.print("\t");

		for (int i = 1; i <= dimension; i++) {
			System.out.print(i + "\t");
		}
		System.out.println("\n");

		for (int i = 0; i < dimension; i++) {
			System.out.print((i + 1) + "\t");
			for (int j = 0; j < dimension; j++) {
				System.out.print(number[i][j] + "\t");
			}
			System.out.println();
		}
	}

}