Question

我编写了一个代码，用于将莫尔斯代码转换为字符。问题是当我在终端上运行此代码时，通过IRB，我得到了预期的输出，但是当我在在线IDE上运行相同的代码时，我获得了不同的输出。

代码：

$morse_dict = {
  "a" => ".-",
  "b" => "-...",
  "c" => "-.-.",
  "d" => "-..",
  "e" => ".",
  "f" => "..-.",
  "g" => "--.",
  "h" => "....",
  "i" => "..",
  "j" => ".---",
  "k" => "-.-",
  "l" => ".-..",
  "m" => "--",
  "n" => "-.",
  "o" => "---",
  "p" => ".--.",
  "q" => "--.-",
  "r" => ".-.",
  "s" => "...",
  "t" => "-",
  "u" => "..-",
  "v" => "...-",
  "w" => ".--",
  "x" => "-..-",
  "y" => "-.--",
  "z" => "--..",
  " " => " ",
  "1" => ".----",
  "2" => "..---",
  "3" => "...--",
  "4" => "....-",
  "5" => ".....",
  "6" => "-....",
  "7" => "--...",
  "8" => "---..",
  "9" => "----.",
  "0" => "-----"
}

def decodeMorse(morseCode)
  words = morseCode.split('       ')
  i=0
  sentence = []
  while i < words.length
    word = words[i].split(' ')
    j = 0 
    while j < word.length
      sentence.push($morse_dict.key(word[j]))
      if word.length - j == 1
        sentence.push(' ')  
      end
    j += 1
  end
  i += 1
  end
  sentence = sentence.join().upcase
  return sentence  
end

sentence= decodeMorse('.... . -.--       .--- ..- -.. .')
puts sentence

输入我进入控制台和IRB：HEY JUDE 输入我在线编辑：HEYJUDE

我不明白为什么空间（HEY（空间）JUDE）被删除，并在网上编辑器（HEYJUDE（空格））的末尾附加。

为了进一步检查我的代码，我在内部while循环中放了一些检查作为 Iteration #{j} ，我得到了非常奇怪的行为。我得到的输出是：

Iteration 1
Iteration 2
Iteration 3
Iteration 4
Iteration 5
Iteration 6
Iteration 7

而不是

Iteration 1
Iteration 2
Iteration 3

Iteration 1
Iteration 2
Iteration 3
Iteration 4

为什么会这样？我已尽力遵循ruby语法风格，但我是新手！

Answer 1

这段代码可能更简单......尝试这样的事情（我没有打扰粘贴morse_dict全局）（p.s.尽量避免使用像这样的全局变量）：

def decode_morse(morse_code)
  morse_dict = { ... } # placeholder, use your actual map here
  out = []
  morse_code.split('       ').each do |w|
    w.split(' ').each do |l|
      out.push morse_dict.invert[l] # actual letter
    end
    out.push ' ' # after each word
  end
  out.join.strip # final output
end

相同Ruby代码的不同输出？

1 个答案: