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學習編程,以便對初學者的問題感到抱歉!在這裏我有一個代碼可以在我的sublime文本編輯器中工作,但是在Coderbyte上引發了一個異常,我知道它使用Ruby 1.8.7。我懷疑它可能與不同版本的Ruby有關。有助於理解發生了什麼問題。感謝回覆!LetterCountI CoderByte。引發異常與工作代碼
異常升高是:
(eval):9: undefined method `keys' for []:Array (NoMethodError) from (eval):4:in `each' from (eval):4:in `LetterCountI' from (eval):23
def LetterCountI(str)
str = str.split
repeating_letters = []
str.each do |word|
word = word.split("")
letters = Hash.new(0)
word.each { |letter| letters[letter] += 1 }
selected_letters = letters.select { |key, value| value > 1 }
repeating_letters << selected_letters.keys.length
end
if (repeating_letters.select {|l| l >= 1}).empty?
return -1
else
max = repeating_letters.max
p repeating_letters
return str[repeating_letters.index(max)]
end
end
感謝您的快速回復! – 2015-04-03 18:00:57