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Floyd's triangle pattern in Java programming.

By Sohail Chand Kalyani

Hello Coders, In this Java tutorial we are going to discuss the Floyd's triangle pattern using the concept of nested for loop.

Floyd's triangle is a right angle triangle that is made by using number that are in increasing format.

Below is the example for floyd's triangle which contains height=7 :


1.Take a value size from the user and store it a variable(int size).

2.Create variable that holds the value of rows(i) and columns(j) and also initialize a variable with 1 (count=1). 
3.As we are using nested for loops, the Outer loop is for rows and the Inner loop is for columns.

4.The first for loop will count the varaible using i as 1 and checks whether i<=n.Same with the second nested for-loop checks till j=1 till j<=i.

5.After every successful iteration the count value is incremented and placed at particular matrix position.


Source code:

import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(;
      int size;
        System.out.println("Enter the size: ");
        int count=1;
        for(int i=1;i<=size;i++){
        for(int j=1;j<=i;j++){
            System.out.print(count+" ");


Output :

Enter the size:7

2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21 
22 23 24 25 26 27 28


Hope you understood the concept and code clearly,if not do comment below.

Also checkout different question's on Java pattern :

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Submitted by Sohail Chand Kalyani (sohailkalyani)

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