如何在ruby中将条件循环连接字符串

Question

I'm trying to concatenate 2 consecutive strings if any string length is less than 4 characters, but I'm not successful.

The code I have so far is:

strings = ['abnhs', 'iuu', 'poioyw', 'tyr', 'mmkaud']
strings.each do |w|
  if w.length < 4
    temp = w
    next
  end    
  w = temp + w 
  puts w
end

Expected output is:

abnhs
iuupoioyw
tyrmmkaud

Thanks in advance for any help

Answer 1

You need to declare the temp variable outside of your each block. Try this:

strings = ['abnhs', 'iuu', 'poioyw', 'tyr', 'mmkaud']
temp = ''
strings.each do |w|
  if w.length < 4
    temp = w
    next
  end    
  w = temp + w 
  puts w
end