Given a string input_text consisting of English letters and spaces, return the length of the last contiguous sequence of non-space characters (word) in input_text. A word is defined as a maximal substring of consecutive non-space characters.
Example 1
Input: openAI is great
Output: 5
Explanation: The last word is great with length 5.
Example 2
Input: data science rocks
Output: 5
Explanation: The last word is rocks with length 5.
Example 3
Input: python programming language
Output: 8
Explanation: The last word is language with length 8.
Constraints
Case 1
Input: 'machine learning model'
Expected: 5
Case 2
Input: ' hello universe '
Expected: 8
Case 3
Input: 'abc def ghi jkl mno'
Expected: 3
Case 4
Input: 'singleword'
Expected: 10
Case 5
Input: ' spaced out '
Expected: 3