首先在Ruby中按哈希值对其哈希值进行排序

Question

我试图根据单词按字母顺序出现的次数对文档进行排序,因此当输出时,它看起来像这样.

Unsorted:
'the', '6'
'we', '7'
'those', '5'
'have', '3'

Sorted:
'we', '7'
'the', '6'
'those', '5'
'have', '3'

Answer 1

试试这个:

假设:

a = { 
  'the' => '6', 
  'we' => '7', 
  'those' => '5', 
  'have' => '3', 
  'hav' => '3', 
  'haven' => '3'
}

然后这样做:

b = a.sort_by { |x, y| [ -Integer(y), x ] }

b 将如下所示:

[
  ["we", "7"], 
  ["the", "6"], 
  ["those", "5"], 
  ["hav", "3"], 
  ["have", "3"], 
  ["haven", "3"]
]

编辑按反向频率排序.