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Top 10 Common Number Pattern Programs For Java Interview

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Top 10 Common Number Pattern Programs For Java Interview

Write a Program to Print Below Pattern?

11111
12222
12333
12344
12345

package com.softwaretestingblog.InterviewPgms;
public class NumberpatternPgm2 
{
   public static void main(String[] args) 
   {
      // TODO Auto-generated method stub
      int i,j;
      for(i=1;i<=5;i++)
      {
         for(j=1;j<=5;j++)
         {
            if(j<=i) 
               System.out.print(j);
            else
               System.out.print(i);
         }
         System.out.println("");
      }
   }
}

 

number pattern
number pattern
Patten_Program1
Patten_Program1
Write a Program TO Print Below Structure?
package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int num, space;
      System.out.print("Enter a number between 1 to 9 : ");
      Scanner reader = new Scanner(System.in);
      try {
         num = reader.nextInt();
         space = num - 1;
         for (int i = 1; i <= num; i++) {
            for (space = 1; space <= (num - i); space++) {
               System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
               System.out.print(j);
            }
            for (int k = (i - 1); k >= 1; k--) {
               System.out.print(k);
            }
            System.out.println();
         }
      } 
      finally {
         reader.close();
      }
   }
}

 

Output:

Patten_Program1
Patten_Program1

Java Programs: Star Pyramid Patterns Program In Java

Write a Number Pattern Program On Below Structure?

1
22
333
4444
55555

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int count = 5;
      for (int i = 1; i <= count; i++) {
         for (int j = 1; j <= i; j++) {
            System.out.print(i);
         }
         System.out.println();
      }
   }
}

 

Output:

Patten_Program2
Patten_Program2

Read Also: Selenium Automation Interview Questions

Write a Program to Below Pattern?

1
12
123
1234
12345
1234
123
12
1

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int n = 5;
      for (int i = 1; i < n; i++) {
         for (int j = 1; j <= i; j++)
            System.out.print(j);
         System.out.println();
      }
      for (int i = n; i >=0 ; i--) {
         for (int j = 1; j <= i; j++)
            System.out.print(j);
         System.out.println();
      }
      System.out.println();
   }
}

 

Output:

Patten_Program3
Patten_Program3

Read Also: Finalize in Java

Write a Program For Below Pattern?

12345
1234
123
12
1

1
12
123
1234
12345

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int n = 5;
      for (int i = n; i >= 0; i--) {
         for (int j = 1; j <= i; j++)
            System.out.print(j);
         System.out.println();
      }
      for (int i = 1; i <= n; i++) {
         for (int j = 1; j <= i; j++)
            System.out.print(j);
         System.out.println();
      }
      System.out.println();
   }
}

 

Output:

Patten_Program4
Patten_Program4

Write a Program For Below Patten?

1
01
101
0101
10101

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int n, p, q;
      n = 5;
      for (int i = 1; i <= n; i++)
      {
         if (i % 2 == 0)
         { p = 1; q = 0; }
         else
         { p = 0; q = 1; }
         for (int j = 1; j <= i; j++)
            if (j % 2 == 0)
               System.out.print(p);
            else
               System.out.print(q);
         System.out.println();
      }
   }
}

 

Output:

Patten_Program5
Patten_Program5

Write a Program for Below Patten?

1
23
456
78910

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int rows, k = 1;
      rows = 4;
      for (int i = 1; i <= rows; i++)
      {
         for (int j = 1; j <= i; j++)
            System.out.print(k++);
         System.out.println();
      }  
   }
}

 

Output:

Patten_Program6
Patten_Program6

Write a Program for Below Patten?

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

Ans:

package com.selenium.actions;
public class Pattern_Program {

   public static void main(String[] args) 
   {
      int n= 5;

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

}

 

Output:

Patten_Program7
Patten_Program7

Write a Program for Below Patten?

1****
12***
123**
1234*
12345

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      int i, j, k;
      int n = 5;
      for (i = 1; i <= n; i++) {
         for (j = 1; j <= i; ++j)
            System.out.print(j);

         for (k = n - i; k >= 1; k--)
            System.out.print("*");

         System.out.println();
      }
   }
}

 

Output:

Patten_Program8
Patten_Program8

Write a Program for Below Patten?

How many rows do you want in this pattern?
5
Here is your pattern….!!!
1
2 6
3 7 10
4 8 11 13
5 9 12 14 15

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      Scanner sc = new Scanner(System.in);
      System.out.println("How many rows you want in this pattern?");
      int rows = sc.nextInt();
      System.out.println("Here is your pattern....!!!");
      for (int i = 1; i <= rows; i++)
      {
         int num = i;
         for (int j = 1; j <= i; j++)
         {
            System.out.print(num+" ");
            num = num+rows-j;
         }
         System.out.println();
      }
      sc.close();
   }
}

 

Output:

Patten_Program9
Patten_Program9

Write a Program for Below Number Pattern Programs?

How many rows do you want in this pattern?
5
Here is your pattern….!!!
11111
11122
11333
14444
55555

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Pattern_Program1 {
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      Scanner sc = new Scanner(System.in);
      System.out.println("How many rows you want in this pattern?");
      int rows = sc.nextInt();
      System.out.println("Here is your pattern....!!!");
      for (int i = 1; i <= rows; i++)
      {
         for (int j = 1; j <= rows-i; j++)
         {
            System.out.print(1);
         }
         for (int j = 1; j <= i; j++)
         {
            System.out.print(i);
         }
         System.out.println();
      }
      sc.close();
   }
}

 

Output:

Patten_Program10
Patten_Program10

Write a Program to Print Below Number Pattern Programs

Ans:

package com.softwaretestingblog.programs;
import java.util.Scanner;
public class Myclass 
{
   public static void main(String arg[])
   {   
      Scanner sc =new Scanner(System.in);
      System.out.println("Enter the number");
      int n=sc.nextInt();
      for(int i=1;i<=n;i++)
      {
         for(int j=i;j<=n;j++)
         {
            System.out.print(" "+j +" ");
         }
         for(int k=1;k<i;k++)
         {
            System.out.print(" "+k+" ");
         }
         System.out.println();
      }
   }
}

 

Write a Program To Print Below Number Pattern Programs?

———When Row No = 3———————
1112
3222
3334
———When Row No = 5———————
111112
322222
333334
544444
555556

Ans:

package com.softwaretestingblog.InterviewPgms;
public class NumberpatternPgm1 {
   public static void numberPattern(int rows) {
      for (int row = 0; row < rows; row++) {
         for (int col = 0; col < rows + 1; col++) {
              int number = 0;
              if (row % 2 == 0) 
              {
              	number = col < rows ? row + 1 : row + 2;
              } else 
              {
                 number = col == 0 ? row + 2 : row + 1;
              }
              System.out.print(number);
           }
           System.out.println();
        }
      }
   public static void main(String[] args) {
      // TODO Auto-generated method stub
      NumberpatternPgm1 obj=new NumberpatternPgm1();
      System.out.println("---------When Row No = 3---------------------");
      obj.numberPattern(3);
      System.out.println("---------When Row No = 5---------------------");
      obj.numberPattern(5);
   }
}

 

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