在用户输入的单词或句子周围打印框架

Question

我正在进行编码训练营，进入第2周，并且学习了循环，方法和一些类。我遇到了这种编码挑战。

我可以在def方法中的句子周围加上一个框。我想知道如何围绕用户输入的单词添加一个框架。我已经尝试过，但是出现错误。

最终，我要实现的是从def方法中删除words = %w(This restaurant has an excellent menu - sushi ramen okonomiyaki.)。

谢谢！

puts "Welcome to frame with words."
puts "Enter your favourite quote or sentence or any word you like"
words = gets.chomp.to_s

def my_favourite words=[]
    words = %w(This restaurant has an excellent menu - sushi ramen okonomiyaki.) 
    longest = 0
    words.each {|word| longest = word.length if longest < word.length }
    (0..longest+3).each {print "*"} 

    print "\n" 
    words.each do |word|
        print "* " 
        print word
        (0..longest-word.length).each { print " " } 
        print"*\n" 
    end
    (0..longest+3).each {print"*" } 
    return 
end
my_favourite

我想要的输出类型如下。

* This         *
* restaurant   *
* has          *
* an           *
* excellent    *
* menu         *
* -            *
* sushi        *
* ramen        *
* okonomiyaki. *
**************** ```

Answer 1

假设

str = gets.chomp
  #=> "This restaurant has an excellent menu - sushi ramen." 

然后

words = str.split
  #=> ["This", "restaurant", "has", "an", "excellent", "menu", "-",
  #    "sushi", "ramen."]
width = words.max_by(&:size).size
  #=> 10
top_bot = '*' * (width+4)
  #=> "**************"
puts top_bot
words.each { |word| puts "* %-#{width}s *" % word }
puts top_bot

显示：

**************
* This       *
* restaurant *
* has        *
* an         *
* excellent  *
* menu       *
* -          *
* sushi      *
* ramen.     *
**************

words.max_by(&:size)的简称：

words.max_by { |word| word.size }
  #=> "restaurant"

请参阅文档Kernel#sprint，以获取"* %-#{width}s *" % word中格式代码的说明。替换为#{width}后，该名称将变为"* %-10s *" % word。 s指定word是字符串。 10表示它应该占据宽度10的字段。 -表示该字符串应在字段中向左调整。宽度为10的字段之前是"* "，然后是" *"，形成了宽度为14的字符串。

这可以（等效地）写成：

word = "balloon"
sprintf("* %-#{width}s *", word)
  #=> "* balloon    *"

另请参阅String#split，Enumerable#max_by和String#*。

Answer 2

假设

str = gets.chomp
  #=> "This restaurant has an excellent menu - sushi ramen." 

然后

words = str.split
  #=> ["This", "restaurant", "has", "an", "excellent", "menu", "-",
  #    "sushi", "ramen."]
width = words.max_by(&:size).size
  #=> 10
top_bot = '*'*(width+4)
  #=> "**************"
puts top_bot
words.map { |word| puts "* %-#{width}s *" % word }
puts top_bot

显示：

**************
* This       *
* restaurant *
* has        *
* an         *
* excellent  *
* menu       *
* -          *
* sushi      *
* ramen.     *
**************

words.max_by(&:size)的简称：

words.max_by { |word| word.size }
  #=> "restaurant"