Which of the following is the correct syntax to create an array of squares from 0 to 4 using Array.new with a block?

easy📝 Syntax Q3 of 15

Ruby - Arrays

AArray.new(5) { |i| i * i }

BArray.new(5, i) { i * i }

CArray.new(5) do i * i end

DArray.new { |i| i * i }

Step-by-Step Solution

Solution:

Step 1: Recall Array.new with block syntax
The block form is Array.new(size) { |index| block } where index goes from 0 to size-1.
Step 2: Check options
Only Array.new(5) { |i| i * i } correctly uses block with index to compute squares.
Final Answer:
Array.new(5) { |i| i * i } -> Option A
Quick Check:
Array.new with block uses index for element values [OK]

Quick Trick: Use block with index for computed array elements [OK]

Common Mistakes:

Master "Arrays" in Ruby

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Ruby Quizzes