Floyd’s triangle number pattern Using nested while loop in Java

In this tutorial ,we will learn about Floyd’s triangle Number pattern using nested while loop in Java.

We can use nested while loop in Java to write coding for Squares, rectangles, Floyed triangle ,Pyramid triangles and many other shapes.

In this tutorial, we will learn about some of the Floyd’s triangle shapes and how to write coding for that in Java programming language.

Program to print triangle pattern using number

Floyd’s triangle pattern 1

pattern 1

class WhilepatternA{
public static void main(String args[]){
        int i=1;
        while(i<=10){//outer while loop
            int j=1;
            while(j<=i){//inner while loop
                System.out.print(j+" ");
                
                j++;
        }
        System.out.println();
        i++;
   }	       
   }
}

When the above code is executed, it produces the following results:

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 10

pattern 2

class WhilepatternA{
public static void main(String args[]){
        int i=1;
        while(i<=10){//outer while loop
            int j=1;
            while(j<=i){//inner while loop
                System.out.print(i+" ");
                
                j++;
        }
        System.out.println();
        i++;
   }	       
   }
}

When the above code is executed, it produces the following results:

1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
6 6 6 6 6 6
7 7 7 7 7 7 7
8 8 8 8 8 8 8 8
9 9 9 9 9 9 9 9 9
10 10 10 10 10 10 10 10 10 10

Floyd’s triangle pattern 2

pattern 3

import java.util.Scanner;
class Whilepatterns{
public static void main(String args[]){
  System.out.println("floyd's triangle number pattren: ");
Scanner scan=new Scanner(System.in);
//cretae a new scanner object
  System.out.println("Enter the number of row of you want: ");
   int rows =scan.nextInt();//get the input from user
int row=1;
   System.out.println("Here your floyd's triangle ");
    int i=1,j;  
    while(i<=rows){//outer while loop
      j=1;
      while(j<=i){//inner while loop
        System.out.print(row+" ");
        row++;
        j++;
    }
    System.out.println();
    i++;
   }	       
   }
}

When the above code is executed, it produces the following results:

When enter rows value is 7

Floyd's triangle number patterns
Enter the number of rows of you want:
7
Here your Floyd's triangle
1
2 3
4 5 6
7 8 9 10
11 12  13 14 15
16 17 18 1 20 21
22 23 24 25 26 27 28

When enter rows value is 10

Floyd's triangle number patterns 
Enter the number of rows of you want: 7 
Here your Floyd's triangle 
1 
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
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55

Floyd’s triangle pattern 4

Pattern 4

public class WhilePattern2{
    public static void main (String args[]){
int i=1,j,k,m1=10,m2=10,num=0;
while(i<=m1){
k=1;
while(k<m1-(m1-i)){
System.out.print(" ");
k++;
}
num=m2-i;
j=1;
while(j<=num){
    System.out.print(m1-(m1-j));
    j++;
}
i++;
System.out.println(" ");
}
    }
}

When the above code is executed, it produces the following results:

1 2 3 4 5 6 7 8 9 
   1 2 3 4 5 6 7 8 
      1 2 3 4 5 6 7 
         1 2 3 4 5 6 
            1 2 3 4 5
               1 2 3 4
                  1 2 3 
                     1 2 
                        1

Floyd’s triangle pattern 5

Pattern 5

class While_pattern5{
public static void main(String args[]){
int i=1;
int j=1;
int k=1;
int m1=10;

while(i<m1){
k=1;
    while(k<m1-i){
        System.out.print(' ');
k++;
}

while(j>0){
System.out.print(m1-(m1-j));
j--;

}
i++;
j+=i;
System.out.println("");

}
System.out.println("");

}
}

When the above code is executed, it produces the following results:

Floyd’s triangle pattern 6

Pattern 6

import java.util.Scanner; //import scanner package 
public class Floyds_trangle7
{ 
public static void main(String args[]) { 
System.out.println("welcome to print floyd's triangle in Java"); //add a discription 
System.out.println("please enter a number of rows :"); 
Scanner sc=new Scanner(System.in); //user input metod 
int rows=sc.nextInt(); //get input from user to print floyd's triangle 
int i=rows;
while(i>=1){
    int j=rows;
    while(j>=i){
        System.out.print(j);
    j--;
    
}
i--;
System.out.println();
}
}
}

When the above code is executed, it produces the following results:

welcome to print Floyd's triangle in Java
please enter a number of rows :
6
6
65
654
6543
65432
654321

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