Java Program to Print Right Arrow Star Pattern

Program to Print Right Arrow Star Pattern

In this article we are going to see how to print the right arrow star pattern.

Example-1

When size value=4
 ****
   ***
     **
       *
     **
   ***
 ****

Example-2:

When size value=5
*****
  ****
    ***
      **
        *
      **
    ***
  ****
*****

Now, let’s see the actual program to print it.

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Approach:

Enter the side of the square and store it in an integer variable size.
Take one outer for loop for the upper half to iterate the rows.
Take second/inner for loop to iterate the columns.
Then go on printing the star symbols according to the iteration.
Then take another outer for loop for the lower half and repeat the steps.

JAVA Code:

Static Star Character
User Input Character

Method-1 : Static Star Character

import java.util.Scanner;
class pattern
{
    public static void main(String[] args)  
    {  
        Scanner scan = new Scanner(System.in);
        System.out.print("Size : ");
        //Taking size as input from user
        int r, c, size=scan.nextInt();

    for (r = 0; r < size; ++r)
    { //Outer loop 1 for first half
        for (c = 0; c < size; ++c)
            if(c<r)
            //To print space
                System.out.print("  "); //Two spaces

            else
            //To print star
                System.out.print("*");            
        //Prints a new line
        System.out.println();
    } 

    for (r = 2; r <= size; ++r)
    { //Outer loop 2 for second half
        for (c = 0; c < size; ++c)
        //To print space
            if(c<size-r)
                    System.out.print("  "); //Two spaces

            else
            //To print star
                    System.out.print("*");
        //Prints a new line
        System.out.println();
        
    }
  }
}

Output

Size : 5
*****
  ****
    ***
      **
        *
      **
    ***
  ****
*****

Method-2 : User Input Character

import java.util.Scanner;
class Main
{
    public static void main(String[] args)  
    {  
        int r, c,size;
        char sym;
        Scanner scan = new Scanner(System.in);
        System.out.print("Size : ");
        //Taking size as input from user
        size=scan.nextInt();
        System.out.print("Character : ");
        //Taking random character as input from user
        sym=scan.next().charAt(0);

    for (r = 0; r < size; ++r)
    { //Outer loop 1 for first half
        for (c = 0; c < size; ++c)
            if(c<r)
            //To print space
                System.out.print("  "); //Two spaces

            else
            //To print star
                System.out.print(sym);            
        //Prints a new line
        System.out.println();
    } 

    for (r = 2; r <= size; ++r)
    { //Outer loop 2 for second half
        for (c = 0; c < size; ++c)
        //To print space
            if(c<size-r)
                    System.out.print("  "); //Two spaces

            else
            //To print star
                    System.out.print("*");
        //Prints a new line
        System.out.println();
        
    }
  }
}

Output:

Size : 5
Character : ~
 ~~~~~
     ~~~~
         ~~~
            ~~
               ~
           ~~
       ~~~
    ~~~
~~~~

C Code:

#include <stdio.h>
int main(int argc, char const *argv[])
{
    printf("Size : ");
    //Taking size as input from user
    int size, r, c;
    scanf("%d", &size);

    for (r = 0; r < size; ++r)
    { //Outer loop 1 for first half
        for (c = 0; c < size; ++c)
            if (c < r)
                //To print space
                printf("  "); //Two spaces
            else
                //To print star
                printf("*");
        //Prints a new line
        printf("\n");
    }

    for (r = 2; r <= size; ++r)
    { //Outer loop 2 for second half
        for (c = 0; c < size; ++c)
            //To print space
            if (c < size - r)
                printf("  "); //Two spaces
            else
                //To print star
                printf("*");
        //Prints a new line
        printf("\n");
    }
    return 0;
}

Output

Size : 5
  *****
     ****
        ***
          **
             *
          **
       ***
    ****
 *****

C++ Code:

#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
    cout << "Size : ";
    //Taking size as input from user
    int size, r, c;
    cin >> size;

    for (r = 0; r < size; ++r)
    { //Outer loop 1 for first half
        for (c = 0; c < size; ++c)
            if (c < r)
                //To print space
                cout << "  "; //Two spaces
            else
                //To print star
                cout << "*";
        //Prints a new line
        cout << endl;
    }

    for (r = 2; r <= size; ++r)
    { //Outer loop 2 for second half
        for (c = 0; c < size; ++c)
            //To print space
            if (c < size - r)
                //To print space
                cout << "  "; //Two spaces
            else
                //To print star
                cout << "*";
        //Prints a new line
        cout << endl;
    }
    return 0;
}

Output

Size : 5
  *****
     ****
        ***
          **
             *
          **
       ***
    ****
 *****

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