Explicit return statement in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to explicitly return the sum of two numbers.

Ruby

def add(a, b)
  [1] a + b
end

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Aputs

Bprint

Creturn

Dyield

Attempts:

3 left

💡 Hint

Common Mistakes

Using print or puts instead of return, which only outputs but does not return a value.

The return keyword explicitly sends the result back from the method.

2fill in blank

medium

Complete the code to explicitly return the string 'Hello' from the method.

Ruby

def greet
  [1] "Hello"
end

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

Aprint

Breturn

Cputs

Dyield

Attempts:

3 left

💡 Hint

Common Mistakes

Using puts or print which only display output but do not return a value.

The return keyword explicitly returns the string from the method.

3fill in blank

hard

Fix the error in the method to explicitly return the product of two numbers.

Ruby

def multiply(x, y)
  product = x * y
  [1] product
end

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

Aputs

Byield

Cprint

Dreturn

Attempts:

3 left

💡 Hint

Common Mistakes

Using puts or print which only output the value but do not return it.

Using return explicitly sends the product back from the method.

4fill in blank

hard

Fill both blanks to explicitly return the length of the string if it is greater than 5.

Ruby

def check_length(str)
  if str.length > 5
    [1] str.length
  else
    [2] 0
  end
end

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

Areturn

Bputs

Cprint

Dyield

Attempts:

3 left

💡 Hint

Common Mistakes

Using puts or print which only display output but do not return a value.

Both branches use return to explicitly send back a value from the method.

5fill in blank

hard

Fill all three blanks to explicitly return a hash with keys as uppercase letters and values as their lengths for words longer than 3 letters.

Ruby

def word_lengths(words)
  result = {}
  words.each do |word|
    if word.length > 3
      result[[1]] = [2]
      [3] result
    end
  end
  result
end

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Aword.upcase

Bword.length

Creturn

Dword.downcase

Attempts:

3 left

💡 Hint

Common Mistakes

Using word.downcase instead of word.upcase for the key.

Not using return to explicitly return the hash inside the loop.

The method returns a hash where keys are uppercase words and values are their lengths. The return keyword explicitly returns the hash inside the loop.