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Codewars LV6

題目(CamelCase Method)：

Write simple .camelCase method (camel_case function in PHP, CamelCase in C# or camelCase in Java) for strings. All words must have their first letter capitalized without spaces.

For instance:

'hello case'.camelcase => HelloCase
'camel case word'.camelcase => CamelCaseWord

class String
  #your cool code here...
end

Test.assert_equals('test case'.camelcase, 'TestCase')
Test.assert_equals('camel case method'.camelcase, 'CamelCaseMethod')
Test.assert_equals('say hello '.camelcase, 'SayHello')
Test.assert_equals(' camel case word'.camelcase, 'CamelCaseWord')

影片解題：

答案：

# CamelCase Method
class String
  def camelcase
    self.split.map{ |x| x.capitalize }.join
  end
end

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