Java program to calculate n-th element of Triangle Numbers sequence.

import java.util.Scanner;

// © 2017 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net

public class TriangleNumber {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
      int n;
      
      System.out.print("Enter number: ");
      n = input.nextInt();

      System.out.print(n + "-th triangle number is equal to " + calculateTriangleNum(n));
  }
  
  static int calculateTriangleNum(int n) {
      return (n * (n + 1)) / 2;
  }
}

 

Java Triangle Number
Tagged on:     

Leave a Reply

Your email address will not be published. Required fields are marked *

This website stores some user agent data. These data are used to provide a more personalized experience and to track your whereabouts around our website in compliance with the European General Data Protection Regulation. If you decide to opt-out of any future tracking, a cookie will be set up in your browser to remember this choice for one year. I Agree, Deny
504