如何计算文本(字符串)中的单词数? [英] How do I count the number of words in a text (string)?

问题描述

我有这个字符串向量(例如):

I have this string vector (for example):

str <- c("this is a string current trey",
    "feather rtttt",
    "tusla",
    "laq")

为了计算此向量中的单词数，我使用了这个(如此处

To count the number of words in this vector I used this (as given here Count the number of words in a string in R?, which is a possible duplicate but with another issue)

No_words <- sapply(gregexpr("\\W+", str), length) + 1

但返回

6 2 2 2

字符串的最后两个位置只有1个元素(即"tusla"和"laq")

String has only 1 element in last two places (i.e. "tusla" and "laq")

因此它应该返回

6 2 1 1

如何解决这个问题?

推荐答案

您可以尝试

sapply(gregexpr("\\S+", x), length)
## [1] 6 2 1 1

或者根据评论中的建议，您可以尝试

Or as suggested in comments you can try

sapply(strsplit(x, "\\s+"), length)
## [1] 6 2 1 1

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