Zip for combining arrays in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to combine two arrays element-wise using zip.

Ruby

a = [1, 2, 3]
b = [4, 5, 6]
combined = a.[1](b)
puts combined.inspect

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Amap

Bzip

Ceach

Dselect

Attempts:

3 left

💡 Hint

Common Mistakes

Using map instead of zip will not pair elements from both arrays.

The zip method combines elements from two arrays into pairs.

2fill in blank

medium

Complete the code to print the first pair from the zipped arrays.

Ruby

a = ['a', 'b', 'c']
b = [1, 2, 3]
zipped = a.zip(b)
puts zipped[[1]].inspect

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A-1

B1

C2

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 as index will give the second pair, not the first.

Array indices start at 0, so the first pair is at index 0.

3fill in blank

hard

Fix the error in the code to correctly zip arrays and print the result.

Ruby

x = [10, 20]
y = [30, 40]
result = x.[1](y)
puts result.inspect

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Azip!

Bzip()

Czip

Dziped

Attempts:

3 left

💡 Hint

Common Mistakes

Adding parentheses or exclamation mark causes errors.

The correct method name is zip without exclamation or parentheses.

4fill in blank

hard

Fill both blanks to create a hash from two arrays using zip and to_h.

Ruby

keys = [:name, :age, :city]
values = ['Alice', 30, 'NYC']
hash = keys.[1](values).[2]
puts hash.inspect

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Azip

Bto_h

Cmap

Dflatten

Attempts:

3 left

💡 Hint

Common Mistakes

Using map instead of zip or missing to_h conversion.

Use zip to pair keys and values, then to_h to convert pairs to a hash.

5fill in blank

hard

Fill all three blanks to zip three arrays and print the combined array.

Ruby

a = [1, 2]
b = ['x', 'y']
c = [:alpha, :beta]
combined = a.[1](b).[2] { |pair| pair.[3](:zip, c) }
puts combined.inspect

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Azip

Bmap

Csend

Deach

Attempts:

3 left

💡 Hint

Common Mistakes

Using each instead of map or wrong method names.

First zip a and b, then map each pair to call send(:zip) on it to combine with c.