LeetCode 434: Number of Segments in a String Solution
Master LeetCode problem 434 (Number of Segments in a String), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
434. Number of Segments in a String
Problem Explanation
Explanation
To solve this problem, we can iterate through the input string and count the number of segments. We can identify a segment by looking for non-space characters. The number of segments will be equal to the number of transitions from a space character to a non-space character. We can handle edge cases by checking if the current character is not a space and the previous character is a space.
- Time complexity: O(n) where n is the length of the input string.
- Space complexity: O(1) constant space is used.
Solution Code
class Solution {
public int countSegments(String s) {
int count = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != ' ' && (i == 0 || s.charAt(i - 1) == ' ')) {
count++;
}
}
return count;
}
}Try It Yourself
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