Pemodelan Untuk Komputasi: Nested Repetition Dan Pola Soal ( Bahasa Inggris )

Pemodelan untuk Komputasi: Nested Repetition dan Contoh Soal ( Bahasa Inggris )

Control Structures

Basically, different control structures can be combined in order to create a complex program, which is used to solve difficult problems : 

• Nested If 
• Combination of conditional & repetition 
• Nested Repetition 

Nested Repetition: Pattern 1

Wombat Needs to Write this pattern :

@@@@@ 

@@@@@ 

@@@@@ 

@@@@@ 

@@@@@ 

To make the pattern, Wombat needs to: 

• Write “@” symbol five times in a row 
• Do step A five times to make five rows.

Algorithms for Pattern 1

First of all, write five @ symbols in a row :

Then, write five @ symbols in five rows : 

Then, combine the first step with second step that becomes right below :

Pattern 2

How about this one ?

@

@@

@@@

@@@@

@@@@@

To make the pattern, Wombat needs to: 

• Write “@” symbol i times in a row, where i = row number
• Do step A five times to make five rows.

Algorithms for Pattern 2

First, write @ symbols i times in a row, where i = row number: 

Second, write five @ symbols in five rows:

Pattern 3

Wombat wants to write n rows. In row number i, Wombat will write: Round i: number from 1 to i. Example (n = 5) 

Round 1: 1 

Round 2: 1 2 

Round 3: 1 2 3 

Round 4: 1 2 3 4 

Round 5: 1 2 3 4 5

To make the pattern, Wombat needs to:

• Write “Round i: 1 to i" in each row, where i is row number.
• Do step 1 n times to make n rows.

Algorithms for Pattern 3

First, write "Round i: 1 to i" in each row, where i is row number. 

Second, do step A n times to make n rows. 

Exercise 1

Wombat wants to write this pattern: (example if n = 5) 

Round 1: 1 1 1 1 1 

Round 2: 2 2 2 2 2 

Round 3: 3 3 3 3 3 

Round 4: 4 4 4 4 4 

Round 5: 5 5 5 5 5 

Exercise 2

Wombat wants to write this pattern. Example if n = 5: 

Round 1: 5 5 5 5 5 

Round 2: 4 4 4 4 4 

Round 3: 3 3 3 3 3 

Round 4: 2 2 2 2 2 

Round 5: 1 1 1 1 1

Exercise 3

Wombat wants to write this pattern: (example if n = 5)

Round 1: 5 5 5 5 5

Round 2: 4 4 4 4 

Round 3: 3 3 3

Round 4: 2 2

Round 5: 1

Sumber http://wikiwoh.blogspot.com