Question

如果你有一堆句子（一段或两段），你如何计算每个句子上的单词。

string = "hello world.  Hello world."

#I first split sentences into an element like so, first maybe initialized variables to count sentence, then words within the sentence
sentencecount = 0
wordcount = 0

string.split(".").each do |sentence|
  sentencecount += 1                     #track number of sentence
  sentence.(/\W+/).each do |word|
    wordcount += 1                       #to track number of word
  end

  puts "Sentence #{sentencecount} has #{wordcount} words."

end

输出：

Sentence 1 has 2 words
Sentence 2 has 5 words

第二行应该说2个字不是5.有什么想法？是的两个循环。也许有更好的方法可以做到这一点，但这就是我理解该计划的方式。

Answer 1

每句话后将wordcount重置为0.

string = "hello world.  Hello world."

#I first split sentences into an element like so, first maybe initialized variables to count sentence, then words within the sentence
sentencecount = 0
wordcount = 0

string.split(".").each do |sentence|
  wordcount = 0
  sentencecount += 1                     #track number of sentences
  sentence.split(/\w+/).each do |word|
    wordcount += 1                       #to track number of words
  end

  puts "Sentence #{sentencecount} has #{wordcount} words."

end

Answer 2

您可以使用空格字符调用split来计算单词：

string = "hello world.  Hello world."

string.split(".").each_with_index do |sentence,index|
  puts "Sentence #{index+1} has #{sentence.split(" ").count} words."
end

# => Sentence 1 has 2 words.
# => Sentence 2 has 2 words.

计算Ruby中每个句子的单词数

2 个答案: