Integer and Float number types in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign an integer value to the variable.

Ruby

number = [1]

Drag options to blanks, or click blank then click option'

A3.14

B"100"

C42

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a float value instead of an integer.

Putting the number inside quotes, making it a string.

The variable number should be assigned an integer value. 42 is an integer, while 3.14 is a float, "100" is a string, and true is a boolean.

2fill in blank

medium

Complete the code to assign a float value to the variable.

Ruby

pi = [1]

Drag options to blanks, or click blank then click option'

A3.14

B"3.14"

C22

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using an integer instead of a float.

Using quotes around the number, making it a string.

The variable pi should be assigned a float value. 3.14 is a float, while 22 is an integer, "3.14" is a string, and true is a boolean.

3fill in blank

hard

Fix the error in the code to correctly convert the string to an integer.

Ruby

number = "123"
converted = [1]

Drag options to blanks, or click blank then click option'

Anumber.to_sym

Bnumber.to_f

Cnumber.to_s

Dnumber.to_i

Attempts:

3 left

💡 Hint

Common Mistakes

Using to_f which converts to float, not integer.

Using to_s which keeps it as string.

To convert a string containing digits to an integer in Ruby, use to_i. to_f converts to float, to_s converts to string, and to_sym converts to symbol.

4fill in blank

hard

Fill both blanks to create a hash with word lengths only for words longer than 4 characters.

Ruby

words = ["apple", "cat", "banana", "dog"]
lengths = {word => word.[1] for word in words if word.[2] > 4}

Drag options to blanks, or click blank then click option'

Alength

Bsize

Clength?

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Using length? which is not a valid method.

Using count which counts characters but is less common here.

In Ruby, word.length or word.size returns the number of characters in the string. Here, word.length is used to get the length for the hash value, and word.size is used to check if the word is longer than 4 characters.

5fill in blank

hard

Fill all three blanks to create a hash with uppercase words as keys and their float lengths as values for words longer than 3 characters.

Ruby

words = ["pear", "fig", "grape", "kiwi"]
result = { [1] => [2].length.[3] for [2] in words if [2].length > 3 }

Drag options to blanks, or click blank then click option'

Aword.upcase

Bword

Cto_f

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using length without converting to float.

Using wrong variable names or missing the iteration variable.

The hash keys are uppercase words using word.upcase. The values are the length converted to float using word.length.to_f. The variable word is used to iterate over the list.