[Solved] What will be printed by this Ruby code?data = [{score: 10}, {score: 5}, {score: 20}] sorted = data.sort_by { |d| -d[:score] } puts sorted.map { |d| d[:score] }.join(", ") | Ruby

Ruby - Enumerable and Collection Processing

What will be printed by this Ruby code?

data = [{score: 10}, {score: 5}, {score: 20}]
sorted = data.sort_by { |d| -d[:score] }
puts sorted.map { |d| d[:score] }.join(", ")

A20, 10, 5

B10, 5, 20

C5, 10, 20

D20, 5, 10

Step-by-Step Solution

Solution:

Step 1: Understand sorting by negative score
Using -d[:score] sorts descending by score.
Step 2: Order scores descending
Scores sorted: 20, 10, 5.
Final Answer:
20, 10, 5 -> Option A
Quick Check:
Negative key sorts descending = 20, 10, 5 [OK]

Quick Trick: Use negative values in sort_by block for descending order [OK]

Common Mistakes:

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