Given a string data = "red;green;blue;yellow", write Ruby code to split it into an array, remove the color "blue", and then join the remaining colors with commas. What is the correct output?

hard📝 Application Q15 of 15

Ruby - String Operations

Given a string data = "red;green;blue;yellow", write Ruby code to split it into an array, remove the color "blue", and then join the remaining colors with commas. What is the correct output?

A"red;green;yellow"

B"red,green,blue,yellow"

C"red green yellow"

D"red,green,yellow"

Step-by-Step Solution

Solution:

Step 1: Split the string by semicolons
Using split(";") on data gives ["red", "green", "blue", "yellow"].
Step 2: Remove "blue" from the array
Remove "blue" by using array.delete("blue") or array.reject!.
Step 3: Join the remaining elements with commas
Joining with join(",") results in "red,green,yellow".
Final Answer:
"red,green,yellow" -> Option D
Quick Check:
Split by ;, remove blue, join by , = red,green,yellow [OK]

Quick Trick: Split by ; remove item, join by , for final string [OK]

Common Mistakes:

Forgetting to remove "blue" before joining
Joining with wrong separator
Using split without argument or wrong separator

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More Ruby Quizzes

Given a string data = "red;green;blue;yellow", write Ruby code to split it into an array, remove the color "blue", and then join the remaining colors with commas. What is the correct output?

Step 1: Split the string by semicolons

Step 2: Remove "blue" from the array

Step 3: Join the remaining elements with commas

Final Answer:

Quick Check:

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