434. Number of Segments in a String #

Problem Statement #

Given a string s, return the number of segments in the string.

A segment is defined to be a contiguous sequence of non-space characters.

Example 1:

Input: s = "Hello, my name is John"
Output: 5
Explanation: The five segments are ["Hello,", "my", "name", "is", "John"]

Example 2:

Input: s = "Hello"
Output: 1

Constraints:

• 0 <= s.length <= 300
• s consists of lowercase and uppercase English letters, digits, or one of the following characters "!@#$%^&*()_+-=',.:".
• The only space character in s is ' '.

Solution: #

impl Solution {
    pub fn count_segments(s: String) -> i32 {
        let (mut count, mut is_space) = (0, true);

        for c in s.chars() {
            if c == ' ' {
                is_space = true;
            } else if is_space {
                is_space = false;
                count += 1;
            }
        }

        count
    }
}

... #