# 434. Number of Segments in a String

## Description

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 "!@#$%^&*()_+-=',.:". • The only space character in s is ' '. ## Solutions • class Solution { public int countSegments(String s) { int ans = 0; for (int i = 0; i < s.length(); ++i) { if (s.charAt(i) != ' ' && (i == 0 || s.charAt(i - 1) == ' ')) { ++ans; } } return ans; } }  • class Solution { public: int countSegments(string s) { int ans = 0; for (int i = 0; i < s.size(); ++i) { if (s[i] != ' ' && (i == 0 || s[i - 1] == ' ')) { ++ans; } } return ans; } };  • class Solution: def countSegments(self, s: str) -> int: ans = 0 for i, c in enumerate(s): if c != ' ' and (i == 0 or s[i - 1] == ' '): ans += 1 return ans  • func countSegments(s string) int { ans := 0 for i, c := range s { if c != ' ' && (i == 0 || s[i-1] == ' ') { ans++ } } return ans }  • class Solution { /** * @param String$s
* @return Integer
*/
function countSegments($s) {$arr = explode(' ', $s);$cnt = 0;
for ($i = 0;$i < count($arr);$i++) {
if (strlen($arr[$i]) != 0) {
$cnt++; } } return$cnt;
}
}