[Solved] You have a list of names with inconsistent spacing and letter cases:names = [" Alice", "BOB ", " cHaRlie "]Which Ruby code correctly cleans this list by removing spaces and making all names lowercase? | Ruby

Ruby - String Operations

You have a list of names with inconsistent spacing and letter cases:

names = ["  Alice", "BOB  ", "  cHaRlie  "]

Which Ruby code correctly cleans this list by removing spaces and making all names lowercase?

Aclean_names = names.map { |n| n.strip.downcase }

Bclean_names = names.map { |n| n.downcase.chomp }

Cclean_names = names.map { |n| n.strip.upcase }

Dclean_names = names.map { |n| n.downcase }

Step-by-Step Solution

Solution:

Step 1: Understand the goal
We want to remove spaces and convert all names to lowercase.
Step 2: Check each option
clean_names = names.map { |n| n.strip.downcase } uses strip then downcase, which removes spaces first, then lowercases. clean_names = names.map { |n| n.downcase.chomp } uses chomp after downcase, but chomp removes only trailing newlines, not spaces, so spaces remain. clean_names = names.map { |n| n.strip.upcase } uses upcase which is wrong. clean_names = names.map { |n| n.downcase } does not remove spaces.
Step 3: Choose best practice
The code that uses strip to remove whitespace and downcase to lowercase correctly cleans the names.
Final Answer:
clean_names = names.map { |n| n.strip.downcase } -> Option A
Quick Check:
strip then downcase cleans names correctly [OK]

Quick Trick: Strip spaces first, then change case for clean strings [OK]

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