Tag: java pattern program

Top 10 Different Number Pattern Programs in Java

This post focuses on the various Java pattern program specifically Top 10 Different Number Pattern Programs in Java. Patterns are one of the easiest ways to improve the coding skills for java. The frequent use of loops can increase your skills and printing them in order.

This article covers various Numeric pattern programs. Other are:

Let’s begin:

Number Patterns in Java

Pattern programs in java: Pattern 1

1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5 
1 2 3 4 5 6

//Pattern with Number

 public class Patter1
 {
    public static void main(String[] args)
     {
        int rows = 6;
        for(int i = 1; i <= rows; ++i)
         {
            for(int j = 1; j <= i; ++j)
             {
                System.out.print(j + " ");
            }
            System.out.println();
        }
    }
 }

Pattern programs in java: Pattern 2

 1 
 2 4 
 3 6 9 
 4 8 12 16 
 5 10 15 20 25 
 6 12 18 24 30 36 
 7 14 21 28 35 42 49 
 8 16 24 32 40 48 56 64 
 9 18 27 36 45 54 63 72 81 
 10 20 30 40 50 60 70 80 90 100

 //Pattern with Number

 public class Pattern2
 {  
   public static void main(String[] args)
   {  
    int lines=10, i=1, j;  
   
   
    for(i=1;i<=lines;i++)
    {
      for(j=1;j<=i;j++)
      {  
       System.out.print(i*j+" ");  
      }  
     
     System.out.println("");  
    }  
 }
 }

Pattern programs in java: Pattern 3

 //Pattern with Numbers

 public class Pattern3
 {  
    public static void main(String[] args)  
    {   
    int count = 5;  
    for(int i = count; i > 0 ; i-- )  
     {  
       for(int j = 1; j <= i ; j++)  
        {  
          System.out.print(j);  
        }  
          System.out.println("");  
        }  
    }  
 }

Now with user input:

Pattern programs in java: Pattern 4

Enter the number of rows: 5
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

import java.util.Scanner;

public class Pattern4
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

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

    sc.close();

  }
}

Pattern programs in java: Pattern 5

Enter the number of rows: 5
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5

import java.util.Scanner;

public class Pattern5
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

   for (int i = 1; i <= rows; i++) 
   {
    for (int j = 1; j <= i; j++)
    {
       System.out.print(i+" ");
     }
             
    System.out.println();
   }
        
   sc.close();
 }
}

Pattern programs in java: Pattern 6

Enter the number of rows: 5
5 4 3 2 1
4 3 2 1
3 2 1
2 1
1

import java.util.Scanner;

public class Pattern6
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i = rows; i >= 1; i--) 
    {
      for (int j = i; j >= 1; j--)
      {
        System.out.print(j+" ");
      }
     
     System.out.println();
    }
        
    sc.close();
  }
}

Pattern programs in java: Pattern 7

Enter the number of rows: 5
1 2 3 4 5
1 2 3 4
1 2 3
1 2 
1 
1 2
1 2 3 
1 2 3 4 
1 2 3 4 5

import java.util.Scanner;

public class Pattern7
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

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

Pattern programs in java: Pattern 8

Enter the number of rows: 5
12345
 2345
  345
   45
    5
   45
  345
 2345
12345

import java.util.Scanner;

public class Pattern8
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i = 1; i <= rows; i++) 
    {
       for (int j = 1; j < i; j++) 
        {
            System.out.print(" ");
        }
        for (int j = i; j <= rows; j++) 
        { 
            System.out.print(j); 
        } 
         
      System.out.println(); 
    } 
      
    for (int i = rows-1; i >= 1; i--) 
    {
        for (int j = 1; j < i; j++) 
        {
            System.out.print(" ");
        }
        for (int j = i; j <= rows; j++)
        {
            System.out.print(j);
        }
         
      System.out.println();
    }
        
    sc.close();
  }
}

Pattern programs in java: Pattern 9

Enter the number of rows: 5
1
10
101
1010
10101

import java.util.Scanner;

public class Pattern9
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i = 1; i <= rows; i++) 
    {
      for (int j = 1; j <= i; j++)
      {
        if(j%2 == 0)
        {
          System.out.print(0);
        }
        else
        {
          System.out.print(1);
        }
      }
         
    System.out.println();
    }
    
    sc.close();
  }
}

Pattern programs in java: Pattern 10

import java.util.Scanner;

public class pattern10
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i = 1; i <= rows; i++) 
    { 
        for (int j = 1; j < i; j++) 
        {
          System.out.print(" ");
        }
        
        for (int j = i; j <= rows; j++) 
        { 
          System.out.print(j+" "); 
        } 
         
     System.out.println(); 
    } 
        
    for (int i = rows-1; i >= 1; i--) 
    {
        for (int j = 1; j < i; j++) 
        {
          System.out.print(" ");
        }
        
        for (int j = i; j <= rows; j++)
        {
          System.out.print(j+" ");
        }
         
     System.out.println();
    }
    
    sc.close();
  }
}

Pattern programs in java: Pattern 11

public class Pattern11
 {
     public static void main(String[] args) 
     {
        int rows = 4, num = 1;
        for(int i = 1; i <= rows; i++) 
        {
          for(int j = 1; j <= i; j++) 
          {
            System.out.print(num + " ");
            ++num;
          }
        System.out.println();
        }
     }
 }

Pattern programs in java: Pattern 12

 //Pattern with numbers

 public class Pattern9
 {
    public static void main(String[] args)
    {
        int rows = 5, count = 1;

        System.out.println("Pyramid");

        for (int i = rows; i > 0; i--)
        {
        for (int j = 1; j <= i; j++)
        {
            System.out.print(" ");
        }

        for (int j = 1; j <= count; j++)
        {
            System.out.print(count+" ");
        }

         System.out.println();

        count++;
        }
    }
 }

Pattern programs in java: Pattern 13

Pyramid
       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

 //Pattern with numbers

 public class Pattern10
 {
    public static void main(String[] args)
    {
        int rows = 7, count = 1;

        System.out.println("Pyramid");

        for (int i = rows; i > 0; i--)
        {
        for (int j = 1; j <= i; j++)
        {
            System.out.print(" ");
        }

        for (int j = 1; j <= count; j++)
        {
            System.out.print(j+" ");
        }

            System.out.println();

            count++;
        }
    }
  }

14 March 2021

Top 10 Different Star Pattern Programs in Java

This post focuses on the various Java pattern program specifically Top 10 Different Star Pattern Programs in Java. Patterns are one of the easiest ways to improve the coding skills for java. The frequent use of loops can increase your skills and printing pattern in order. This article covers various star patterns. Other are:

Let’s begin:

Printing Star Patterns in Java

Pattern programs in java: Pattern 1

Half Pyramid:
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * * *

Lets understand the coding.

 //Pattern half Pyramid 

 public class Pattern1 
 {
    public static void main(String[] args) 
    {
      int row = 6;
      System.out.println("Half Pyramid:");

      for(int i = 1; i <= row; ++i) 
      {
        for(int j = 1; j <= i; ++j) 
        {
          System.out.print("* ");
        }
       System.out.println();
      }
    }
 }

Pattern programs in java: Pattern 2

Inverted Half Pyramid:
* * * * * * 
* * * * * 
* * * * 
* * * 
* * 
*

//Pattern Inverted Half Pyramid

public class Pattern2 
 {
  public static void main(String[] args) 
  {
    int rows = 6;
    System.out.println("Inverted Half Pyramid:");
    for(int i = rows; i >= 1; --i) 
    {
        for(int j = 1; j <= i; ++j) 
        {
            System.out.print("* ");
        }
        System.out.println();
    }
  }
 }

Pattern programs in java: Pattern 3

      *
     ***
    *****
   *******
  *********
 ***********

 //Pattern full pyramid

 public class Main
 { 
  public static void main(String[] args)  
  {  
    int rows = 6;  
    
    System.out.println();  
    
    for (int i = 0; i < rows + 1; i++) 
    { 
    for (int j = rows; j > i; j--) 
    {  
            System.out.print(" ");  
        }  
        for (int k = 0; k < (2 * i - 1); k++) 
        {  
            System.out.print("*");  
        }  
        System.out.println();  
    }  
  }  
 }

Pattern programs in java: Pattern 4

Enter the number of rows: 5 
* * * * *
 * * * *
  * * *
   * *
    *

import java.util.Scanner;

public class pattern4
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i= 0; i<= rows-1 ; i++)
    {
        for (int j=0; j<=i; j++)
        {
            System.out.print(" ");
        }
        for (int k=0; k<=rows-1-i; k++)
        {
            System.out.print("*" + " ");
        }
        System.out.println();
    }

    sc.close();

  }
}

Pattern programs in java: Pattern 5

 Enter the number of rows: 5
     *
    * *
   * * *
  * * * *
 * * * * * 
  * * * * 
   * * * 
    * * 
     *

import java.util.Scanner;

public class Pattern5
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i= 0; i<= rows-1 ; i++)
    {
        for (int j=rows-1; j>=i; j--)
        {
            System.out.print(" ");
        }
        for (int k=0; k<=i; k++)
        {
            System.out.print("*" + " ");
        }
        System.out.println("");
    }
    for (int i= 0; i<= rows-1 ; i++)
    {
        for (int j=-1; j<=i; j++)
        {
            System.out.print(" ");
        }
        for (int k=0; k<=rows-2-i; k++)
        {
            System.out.print("*" + " ");
        }
        System.out.println("");
    }

    sc.close();

  }
}

Pattern programs in java: Pattern 6

The half diamond pattern in java.

Enter the number of rows: 5
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * 
* * * 
* * 
*

import java.util.Scanner;

public class Pattern6
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i= 0; i<= rows-1 ; i++)
    {
        for (int j=0; j<=i; j++) 
        { 
          System.out.print("*"+ " "); 
            
        } 
    System.out.println(""); 
        
    } 
        
    for (int i=rows-1; i>=0; i--)
    {
        for(int j=0; j <= i-1;j++)
        {
            System.out.print("*"+ " ");
        }
     System.out.println("");
    }
 
    sc.close();

  }
}

Pattern programs in java: Pattern 7

The left half diamond pattern in java.

Enter the number of rows: 5
    *
   **
  ***
 ****
*****
 ****
  ***
   **
    *

import java.util.Scanner;

public class Pattern7
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

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

    }
 
    sc.close();

  }
}

Pattern programs in java: Pattern 8

Half hourglass pattern in java

Enter the number of rows: 5
* * * * * 
* * * *
* * *
* * 
* 
*
* *
* * * 
* * * *
* * * * *

import java.util.Scanner;

public class Pattern8
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i= rows-1; i>= 0; i--)
    {
        for (int j=i; j>=0; j--)
        {
            System.out.print("*"+ " ");
        }
        System.out.println("");
    }
    for (int i=0; i<= rows-1; i++)
    {
        for(int j=i; j >= 0;j--)
        {
            System.out.print("*"+ " ");
        }
        System.out.println("");
    }
 
    sc.close();

  }
}

Pattern programs in java: Pattern 9

Hourglass pattern in java.

Enter the number of rows: 5
* * * * * 
 * * * *
  * * *
   * *
    *
    *
   * * 
  * * *
 * * * * 
* * * * *

import java.util.Scanner;

public class Pattern9
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i= 0; i<= rows-1 ; i++)
    {
        for (int j=0; j <i; j++)
        {
          System.out.print(" ");
        }
        for (int k=i; k<=rows-1; k++) 
        { 
          System.out.print("*" + " "); 
            
        } 
     System.out.println(""); 
    }
        
    for (int i= rows-1; i>= 0; i--)
    {
        for (int j=0; j< i ;j++)
        {
          System.out.print(" ");
        }
        for (int k=i; k<=rows-1; k++)
        {
          System.out.print("*" + " ");
        }
     System.out.println("");
    }

    sc.close();

  }
}

Pattern programs in java: Pattern 10

Hollow triangle star pattern in java.

import java.util.Scanner;

public class Pattern10
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter the number of rows: ");
    int rows = sc.nextInt();

    for (int i=1; i<= rows ; i++)
    {
        for (int j = i; j < rows ; j++) 
        {
            System.out.print(" ");
        }   
        for (int k = 1; k <= (2*i -1) ;k++) 
        {
            if( k==1 || i == rows || k==(2*i-1)) 
            {
                System.out.print("*");
            }
            else 
            {
                System.out.print(" ");
            }
        }
        System.out.println("");
    }

    sc.close();

  }
}

14 March 2021

Top 10 Different Alphabet Pattern Programs in Java

This post focuses on the various Java pattern program specifically Top 10 Different Alphabet Pattern Programs in Java. Patterns are one of the easiest ways to improve the coding skills for java. The frequent use loops can increase your skills and printing pattern in order. This article covers various Alphabet patterns. Other are:

Numeric pattern program
Star pattern programs.

Let’s begin:

Alphabet/Character Patterns in Java

Pattern programs in java: Pattern 1

 A
 B B
 C C C
 D D D D
 E E E E E
 F F F F F F
 G G G G G G G
 H H H H H H H H

Let us understand the code:

 //Pattern with alphabets

 public class Pattern1  
 {  
    public static void main(String[] args)  
    {  
        int count = 7;  
        for(int i = 0 ; i <= count  ; i++)  
        {  
         for(int j = 0 ; j <= i ; j++)  
         {  
          System.out.print(" "+(char)(65 + i));  
         }  
          System.out.println("");  
        }  
    }  
 }

Pattern programs in java: Pattern 2

Enter the number of rows: 5
A
A B
A B C
A B C D
A B C D E

import java.util.Scanner;
public class Pattern2
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
        int alph = 65; 
        
        for (int i=0; i< rows; i++)
        {
            for (int j=0; j<=i; j++)
            {
              System.out.print((char) (alph+j) + " ");
            }
            System.out.println();
        }
         
        sc.close();
    }
}

Pattern programs in java: Pattern 3

Enter the number of rows: 5
A B C D E F 
A B C D E 
A B C D 
A B C 
A B 
A 
A 
A B 
A B C 
A B C D 
A B C D E 
A B C D E F

import java.util.Scanner;
public class Pattern3
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       for (int i = 5; i >= 0; i--)
       {
        // ASCII value of alphabet 'A'
        int alph = 65;
        
        for (int j = 0; j <= i; j++)
            System.out.print((char) (alph + j) + " ");
        
        System.out.println();
       }
    
      for (int i = 0; i<= 5; i++)
      {
       int alph = 65;
       for (int j = 0; j <= i; j++)
          System.out.print((char) (alph + j) + " ");
   
       System.out.println();
      }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 4

Enter the number of rows: 5
E
E D
E D C
E D C B
E D C B A

import java.util.Scanner;
public class Pattern4
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
        for (int i=rows-1; i>=0 ; i--)
        {
          for (int j=rows-1; j>=i; j--)
          {
            System.out.print((char) (alphabet+j) + " ");
          }
         System.out.println();
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 5

Full pyramid character pattern in Java.

Enter the number of rows: 5
      A
     A B
    A B C
   A B C D
  A B C D E

import java.util.Scanner;
public class Pattern5
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 0; i<= rows-1 ; i++)
        {
            for (int j=rows-1; j>i; j--)
            {
                 System.out.print(" ");
            }
            for (int k=0; k<=i; k++)
            {
                 System.out.print((char) (alphabet+k) + " ");
            }
            System.out.println();
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 6

Inverted pyramid pattern of alphabets in java.

Enter the number of rows: 5
   A B C D E
    A B C D
     A B C
      A B
       A

import java.util.Scanner;

public class Pattern6
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 0; i<= rows-1 ; i++)
        {
            for (int j=0; j<=i; j++)
            {
                System.out.print(" ");
            }
            for (int k=0; k<=rows-1-i; k++)
            {
              System.out.print((char) (alphabet + k) + " ");
            }
            System.out.println();
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 7

Enter the number of rows: 6
A B C D E F 
 B C D E F 
  C D E F 
   D E F 
    E F 
     F 
     F 
    E F 
   D E F 
  C D E F 
 B C D E F 
A B C D E F

import java.util.Scanner;

public class Pattern7
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 0; i<= rows-1 ; i++)
       {
        for (int j=0; j<i; j++)
        {
          System.out.print(" ");
        }
        for (int k=i; k<=rows-1; k++)
        {
          System.out.print((char) (alphabet + k) + " ");
        }
        System.out.println("");
       }
        
        for (int i= rows-1; i>= 0; i--)
        {
         for (int j=0; j<i; j++)
         {
           System.out.print(" ");
         }
         for (int k=i; k<=rows-1; k++)
         {
           System.out.print((char) (alphabet + k) + " ");
         }
        System.out.println("");
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 8

Enter the number of rows: 5
A  
A B  
A B C 
A B C D  
A B C D E 
A B C D 
A B C 
A B  
A

import java.util.Scanner;
public class Pattern8
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 0; i<= rows-1 ; i++)
        {
         for (int j=0; j<=i; j++)
         {
            System.out.print((char) (alphabet + j)+ " ");
         }
        System.out.println("");
        }
        for (int i=rows-1; i>=0; i--)
        {
         for(int j=0; j <= i-1;j++)
         {
            System.out.print((char) (alphabet + j)+ " ");
         }
        System.out.println("");
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 9

Enter the number of rows: 5
     A
    BB
   CCC
  DDDD
 EEEEE
FFFFFF

import java.util.Scanner;
public class Pattern9
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 0; i<= rows; i++)
        {
         for (int j=1; j<=rows-i; j++)
         {
            System.out.print(" ");
         }
         
         for (int k=0;k<=i;k++)
         {
            System.out.print((char) (i+alphabet));
         }  
            System.out.println("");
        }
         
    sc.close();
  }
}

Pattern programs in java: Pattern 10

import java.util.Scanner;
public class Pattern10
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the number of rows: ");
        int rows = sc.nextInt();
       
       // ASCII value of alphabet 'A'
       int alphabet = 65; 
        
       for (int i= 1; i<= rows ; i++)
        {
         int count = rows -1;
         int temp = i;
         
         for (int j=1; j<=i; j++)
         {
            System.out.printf("%4c", (char)temp + alphabet-1);
            temp = temp + count;
            count--;
         }
        System.out.println("");
        }
         
    sc.close();
  }
}

14 March 2021