Menu
Is there anything better than string.scan(/(\w|-)+/).size (the - is so, e.g., "one-way street" counts as 2 words instead of 3)?
449
A simple way to count words in a string in Java is to use the StringTokenizer class: assertEquals(3, new StringTokenizer("three blind mice"). countTokens()); assertEquals(4, new StringTokenizer("see\thow\tthey\trun").
Ruby | String count() Method In this method each parameter defines a set of characters to which is to be counted. The intersection of these sets defines the characters to count in the given string. Any other string which starts with a caret ^ is negated. Parameters: Here, str is the given string.
Ruby | Array count() operation Array#count() : count() is a Array class method which returns the number of elements in the array. It can also find the total number of a particular element in the array. Syntax: Array. count() Parameter: obj - specific element to found Return: removes all the nil values from the array.
Instantiate a String class by passing the byte array to its constructor. Using split() method read the words of the String to an array. Create an integer variable, initialize it with 0, int the for loop for each element of the string array increment the count.
string.split.size Edited to explain multiple spaces
From the Ruby String Documentation page
split(pattern=$;, [limit]) → anArray
Divides str into substrings based on a delimiter, returning an array of these substrings.
If pattern is a String, then its contents are used as the delimiter when splitting str. If pattern is a single space, str is split on whitespace, with leading whitespace and runs of contiguous whitespace characters ignored.
If pattern is a Regexp, str is divided where the pattern matches. Whenever the pattern matches a zero-length string, str is split into individual characters. If pattern contains groups, the respective matches will be returned in the array as well.
If pattern is omitted, the value of $; is used. If $; is nil (which is the default), str is split on whitespace as if ' ' were specified.
If the limit parameter is omitted, trailing null fields are suppressed. If limit is a positive number, at most that number of fields will be returned (if limit is 1, the entire string is returned as the only entry in an array). If negative, there is no limit to the number of fields returned, and trailing null fields are not suppressed.
" now's the time".split #=> ["now's", "the", "time"] While that is the current version of ruby as of this edit, I learned on 1.7 (IIRC), where that also worked. I just tested it on 1.8.3.
197
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
