You are given a sentence containing words separated by single spaces and a searchWord. Your task is to determine whether searchWord is a prefix of any word in the sentence. Return the 1-based index of the first word in which searchWord appears as a prefix.
- If searchWord is a prefix of multiple words, return the index of the earliest such word.
- If no word starts with searchWord, return −1
A prefix of a string is any contiguous substring that begins at the first character.
Constraints:
- 1 <= sentence.length <= 100
- 1 <= search_word.length <= 10
- The sentence consists of lowercase English letters and spaces.
- search_word consists of lowercase English letters.
