Word Count

Data Structures, Operators & Stringsmedium

Course · Section 9: Data Structures, Modern Operators and Strings · Lecture 128: Working With Strings - Part 1

Implement `wordCount(s)` returning the number of words in `s`, where words are separated by any whitespace and surrounding whitespace is ignored.

Input: wordCount("the quick brown fox")

Output: 4

Input: wordCount(" hello world ")

Output: 2

+ 1 hidden test run on Submit.

Common pitfalls

An empty or all-space string splits to [''], which would count as 1 without a filter.

Approach & explanation (try first)

Trimming and splitting on \s+ with a filter handles extra and leading/trailing whitespace correctly.

⌘/Ctrl + Enter

Run your code to see results.