HackerRank - Remove the First Capital Letter from Each Element

Problem:

You are given a list of countries, each on a new line. Your task is to read them into an array and then transform them in the following way:

The first capital letter (if present) in each element of the array should be replaced with a dot ('.'). Then, display the entire array with a space between each country's names.

# Input

• Namibia
• Nauru
• Nepal
• .
• .
• .
• Norway

# Output

• .amibia .auru .epal .etherlands .ewZealand .icaragua .iger .igeria .orthKorea .orway

# Solution

            
    mapfile array
    echo ${array[@]/[A-Z]/.}
    

Post:

• 2025-04 - Awk #1;