Java program to Integrated triangle patterns using for loop

Java program to Integrated triangle pattern using for loop

In this tutorial, we will discuss a concept of  Java program to Integrated triangle patterns using for loop in Java language

In Java  programming language, we can use for loop ,while loop and do-while loop to display different number (binary, decimal), alphabets or star patterns programs.

In this article, we are going to learn  how to Display Integrated triangle star and number patterns  using for loop in Java language

Java code to Integrated triangle star patterns

Double Triangle star pattern 1

Program 1

import java.util.Scanner;
class integratedTrianglefor{
public static void main(String args[]){
    int i,j,k;  //variable declaration
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();

for(i=1; i<=rows; i++){
  for(j=1; j<=i; j++){
  System.out.print("*"); //print star
  
}
for(j=i*2; j<rows*2; j++){
  System.out.print(" ");  //print space
  
}

for(k=i; k>=1; k--){
  System.out.print("*");  //print star
  
}

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

}
}
}

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

 

Double Triangle star pattern 2

Program 2

import java.util.Scanner;
class integratedTrianglefor1{
public static void main(String args[]){
    int i,j,k;  //variable declaration
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();

for(i=rows; i>=1; i--){
  for(j=rows; j>=1+rows-i; j--){
  System.out.print("*");
  
}
for(j=i*2; j<rows*2-1; j++){
  System.out.print(" ");
  
}

for(k=1+rows-i; k<=rows; k++){
    if(k!=1)
  System.out.print("*");
  
}

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

}
}
}

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

Java code to Integrated triangle number patterns

Double Triangle number pattern 1

Program 1

import java.util.Scanner;
class integratedTrianglefor{
public static void main(String args[]){
    int i,j,k;  //variable declaration
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();

for(i=1; i<=rows; i++){
  for(j=1; j<=i; j++){
  System.out.print(j);
  
}
for(j=i*2; j<rows*2; j++){
  System.out.print(" ");
  
}

for(k=i; k>=1; k--){
  System.out.print(k);
  
}

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

}
}
}

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

 

Double Triangle number pattern 2

Program 2

import java.util.Scanner;
class integratedTrianglefor1{
public static void main(String args[]){
    int i,j,k;  //variable declaration
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();

for(i=rows; i>=1; i--){
  for(j=rows; j>=1+rows-i; j--){
  System.out.print(j);
  
}
for(j=i*2; j<rows*2-1; j++){
  System.out.print(" ");
  
}

for(k=1+rows-i; k<=rows; k++){
    if(k!=1)
  System.out.print(k);
  
}

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

}
}
}

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

 

Double Triangle number pattern 3

Program 3

 

import java.util.Scanner;
class IntegratedTriangle5{
public static void main(String args[]){
    int i,j,k;  //variable declaration
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();
for(i=rows; i>=1; i--){

     for(j=1; j<=i; j++){
         System.out.print(j);
             }

     for(j=i*2; j<rows*2-1; j++){
         System.out.print(" ");
            }

     for(k=i; k>=1; k--){
        if(k!=rows)
         System.out.print(k);
              }
System.out.print("\n");

         }
    }
}

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

 

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