将每个单词的第一个字母附加到结尾

Question

对于每个单词，我试图将单词的第一个字母移到单词的末尾。例如，

• "this is an example" ----＆gt; "hist si na xamplee"。

我用一个词来实现这一点，例如，

x = "hello"
x << x.split("").shift # => "elloh"

Answer 1

"this is an example".gsub(/(\S)(\S+)/, '\2\1')
# => "hist si na xamplee"

Answer 2

'this is an example'.split.map { |word| word.chars.rotate.join }.join(' ')
#=> "hist si na xamplee"

参考文献：

• String#chars
• Array#rotate

Answer 3

 "It was the best of times, it was the worst of times".
   gsub(/[\p{Alpha}']+/) {  |s| s[1..-1]<<s[0]}
   #=> "tI asw het estb fo imest, ti asw het orstw fo imest"