Upto and downto methods in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 5 using upto method.

Ruby

1.[1](5) { |i| puts i }

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

Atimes

Bdownto

Cupto

Deach

Attempts:

3 left

💡 Hint

Common Mistakes

Using downto instead of upto will count downwards.

Using times or each will not work directly on a number.

The upto method counts upwards from the starting number to the given number.

2fill in blank

medium

Complete the code to print numbers from 5 down to 1 using downto method.

Ruby

5.[1](1) { |i| puts i }

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

Adownto

Btimes

Ceach

Dupto

Attempts:

3 left

💡 Hint

Common Mistakes

Using upto instead of downto will count upwards.

Using times or each will not work directly on a number.

The downto method counts downwards from the starting number to the given number.

3fill in blank

hard

Fix the error in the code to print numbers from 3 up to 7.

Ruby

3.[1](7) { |num| puts num }

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

Aeach

Bupto

Cdownto

Dtimes

Attempts:

3 left

💡 Hint

Common Mistakes

Using downto will not print anything because 3 is less than 7.

Using each or times on a number is incorrect.

To count upwards from 3 to 7, use upto. Using downto would count downwards and cause no output here.

4fill in blank

hard

Fill both blanks to create a hash with keys from 1 to 4 and values counting down from 4 to 1.

Ruby

result = { [1].[2](1) { |i| [i, 5 - i] } }

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

A1

B4

Cdownto

Dupto

Attempts:

3 left

💡 Hint

Common Mistakes

Using upto instead of downto will count upwards.

Starting from 1 instead of 4 will reverse keys and values.

Start from 4 and count down to 1 using downto. The keys are from 4 down to 1, values calculated as 5 - key.

5fill in blank

hard

Fill all three blanks to create a hash with keys from 'a' to 'c' and values from 1 up to 3.

Ruby

letters = ('a'..'c').to_a
numbers = 1.[1](3).to_a
result = { [2].zip([3]).to_h }

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

Aupto

Bletters

Cnumbers

Ddownto

Attempts:

3 left

💡 Hint

Common Mistakes

Using downto instead of upto for numbers.

Mixing letters and numbers in wrong order.

Use upto to get numbers from 1 to 3. Then zip letters and numbers arrays to create the hash.