Capitalize, swapcase and reverse in Ruby [duplicate]

Question

I have a challenging Ruby problem:

I want to convert "howdy" to "YDWOh" and "how are you" to "uoy era WOh".

which is essentially capitalize, swapcase and reverse functions. Capitalize and swapcase is only for the first word of the sentence. How do I do this when I have more than one word in the sentence?

This doesn't seem like a normal situation. Is it homework or a programming challenge? If so, in either case, you should figure it out for yourself. That's the point of homework and programming challenges. — the Tin Man
– the Tin Man, Commented Apr 8, 2013 at 2:07

Community · Accepted Answer · 2017-05-23 12:24:41Z

3

Try the following steps:

capitalize your string
split(' ') your string into an array with words
Use each_with_index.map to go over each word in the array
Use swapcase on only the first word of the array
join(' ') the array back into a string
reverse the string

edited May 23, 2017 at 12:24

CommunityBot

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answered Apr 8, 2013 at 0:18

Mischa

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2 Comments

Mischa Over a year ago

@Linuxios, but I didn't add the code on purpose... so that there was at least something left for him to figure out by himself.

Linuxios Over a year ago

Sorry. I'll revert. Someone bellow told me I should edit my answer of code into your answer as it was using your steps. I'll revert.

Arup Rakshit · Accepted Answer · 2013-04-08 07:32:38Z

You can try the below:

a = "how are you" p a.gsub(a.split[0...1].join(' '),a.split[0...1].join(' ').capitalize.swapcase).reverse

Output:

"uoy era WOh"

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