Question

Write a ruby algorithm that prints only words that begin with a capital letter

Input

a = ['aA', 'Aa', 'red', 'Book']

Output

b = ['Aa', 'Book']

Answer 1

Please find the answer below.
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code screen shot

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main.rb

#initialize the array
array = ['aA', 'Aa', 'red', 'Book']

#loop for each element in the array
array.each do |i|
  
#now check if first character is same as upper case of it
if i[0]==i[0].upcase
  
#if yes print it
puts i

#end of if condition
end
  
#end of array loop
end

output