Pattern Programming Dashboard

June 30, 2023

PrepSter Coding Questions and Answers : Pattern

Suppose  you are asked two questions in the online test. Atleast one of the two questions that you will be asked will be pattern printing program.

There are only limited number of coding pattern programs in the world on this dashboard you will find all of the pattern printing programs possible.

Thus, in your exam you should get one of the program from below –

IBM Pattern Programming

There are two types of Coding(pattern) programs –

  1. Star based Printing – Click here to visit this section
  2. Number based Pattern – Click here to visit this section

Coding Questions of PrepSter with Solutions

[table id=377 /]

Star based Programs

A star-based program is a program that prints patterns or shapes using asterisks (“*”) or stars. These patterns can be simple or complex, depending on the desired output.

In the provided example, we have a simple star-based program that prints a right triangle pattern. The program prompts the user to enter the number of rows for the pattern. Based on the input, the program uses nested loops to iterate over the rows and columns of the pattern.

The outer loop controls the number of rows, and for each row, the inner loop prints the corresponding number of stars. The inner loop starts from zero and goes up to the current row number, printing an asterisk followed by a space for each iteration. After each row is printed, a new line is added to move to the next row.

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

Square Star Pattern

Difficulty – ★

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

Hollow Square Star Pattern

Difficulty – ★ and 1/2

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

Rhombus Star Pattern

Difficulty – ★★

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

Rectangle Star Pattern

Difficulty – ★

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

Hollow Rectangle Star Pattern

Difficulty – ★ and 1/2

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

Parallelogram Star Pattern

Difficulty – ★★

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

Rectangle Star Pattern

Difficulty – ★

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

Hollow Rectangle Star Pattern

Difficulty – ★ and 1/2

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

Parallelogram Star Pattern

Difficulty – ★★

Checkout code for this program –

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

Mirrored Rhombus Star Pattern

Difficulty – ★★ and 1/2

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           *
           **
           ***
           ****

Triangle Star Pattern

Difficulty – ★ and 1/2

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

Pyramid Star Pattern

Difficulty – ★★

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

Hollow Pyramid Star Pattern

Difficulty – ★★

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

Inverted Pyramid Star Pattern

Difficulty – ★★

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

Inverted Hollow Pyramid Star Pattern

Difficulty – ★★ and 1/2

           *
           **
           ***
           ****
           ***
           **
           *
Half Diamond Star Pattern 
              *
             **
            ***
           ****
            ***
             **
              *

Half Diamond Star Pattern Inverted

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

Diamond Star Pattern

Number Pattern Printing Programs

           1111
           1111
           1111
           1111

Basic Square 1 Pattern

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           1111
           2222
           3333
           4444

Basic Square incrementing Pattern

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           333
           313
           323
           333

Internal varsity square Pattern

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           1
           23
           456
           78910

Basic Right Triangle Number Pattern

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           10987
           456
           32
           1

Basic Right Triangle Number Pattern (Inverted)

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           6666
           555
           44
           3

Basic incrementing Triangle Pattern initialised = 3

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           3
           44
           555
           6666
Basic incrementing Triangle Pattern(Inverted) initialised = 3 Checkout code for this program – 
           3
           4 5
           6 7 8
           9 10 11 12
Basic double incrementing Triangle Pattern initialised = 3 Checkout code for this program – 
           3
           44
           555
           6666
           555
           44
           3

Basic incrementing Diamond Pattern(Inverted) initialised = 3

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            3
            45
            678
            9101112
            678
            45
            3

Basic double incrementing Triangle Pattern initialised = 3

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           3
           54
           876
           1211109
           876
           54
           3

Basic incrementing Triangle Pattern(Inverted) initialised Mirrored = 3

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           2
           33
           444
           5555
           5555
           444
           33
           2

Basic incrementing Diamond Pattern(Inverted Sandwich) initialised = 3

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            2
            34
            567
            891011
            891011
            567
            34
            2

Basic double incrementing Triangle Pattern initialised Sandwich= 3

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           2
           43
           765
           1110198
           1110198
           765
           43
           2

Basic incrementing Triangle Pattern(Inverted) initialised Mirrored Sandwich = 3

Checkout code for this program –

Number Star Mix Pattern

           1*2*3*4
           5*6*7*8
           9*10*11*12
           13*14*15*16

Basic incrementing Squared Number-Star Pattern 

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C | Java | Python

           13*14*15*16
           9*10*11*12
           5*6*7*8
           1*2*3*4

Basic incrementing inverted Squared Number-Star Pattern

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C | Java | Python

          1*2*3*4
          9*10*11*12
          5*6*7*8
          13*14*15*16

Basic incrementing Squared Number-Star Pattern + Basic incrementing inverted Squared Number-Star Pattern (alternate)

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C | Java | Python

          1*2*3*4
          9*10*11*12
          13*14*15*16
          5*6*7*8

Basic incrementing Squared Number-Star Pattern + Basic incrementing inverted Squared Number-Star Pattern (alternate)

Type 2

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C | Java | Python

          1*2*3*4
          9*10*11*12
          17*18*19*20
          13*14*15*16
          5*6*7*8

Basic incrementing Squared Number-Star Pattern + Basic incrementing inverted Squared Number-Star Pattern (alternate)

Type 3

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C | Java | Python

          4*3*2*1
          12*11*10*9
          8*7*6*5
          16*15*14*13

Basic incrementing Squared Number-Star Pattern Mirrored + Basic incrementing inverted Squared Number-Star Pattern Mirrored (alternate)

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C | Java | Python

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

Basic incrementing Triangle Pattern

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C | Java | Python

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

Basic incrementing Triangle Pattern

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C | Java | Python

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

Basic incrementing Triangle Pattern + Inverted (Mix)

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C | Java | Python

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

Basic incrementing mirrored Triangle Pattern

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C | Java | Python

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

Basic incrementing inverted mirrored Triangle Pattern

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C | Java | Python

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

Basic incrementing Triangle Pattern + Inverted (Mix)

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C | Java | Python

           1
           2*2
           3*3*3
           4*4*4*4
           3*3*3
           2*2
           1

Basic Diamond Number Star Pattern

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C | Java | Python

           1
           2*2
           3*3*3
           4*4*4*4
           4*4*4*4
           3*3*3
           2*2
           1

Basic Diamond Number Star Pattern (Sandwich)

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C | Java | Python

           4*4*4*4
           3*3*3
           2*2
           1
           1
           2*2
           3*3*3
           4*4*4*4

Basic Diamond Number Star Pattern (Sandwich Inverted)

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C | Java | Python

           2
           3*3
           4*4*4
           3*3
           2

Basic Diamond Number Star Pattern initialised

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C | Java | Python

           2
           3*3
           4*4*4
           4*4*4
           3*3
           2

Basic Diamond Number Star Pattern (Sandwich)

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C | Java | Python

           6*6*6*6
           5*5*5
           4*4
           3
           3
           4*4
           5*5*5
           6*6*6*6

Basic Diamond Number Star Pattern (Sandwich Inverted)

Checkout code for this program

C | Java | Python