1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence

class Solution {
public:
    int isPrefixOfWord(string sentence, string searchWord) {
        int l = 0, r = 0, it = 0, ord = 0;
        sentence += " "; // Append space to handle the last word
        int length = searchWord.size();

        while (r < sentence.size()) {
            if (sentence[r] == ' ') { // If a space is found
                ord++; // Increment word index
                if (r - l >= length) { // Check if the word is long enough
                    while (l < r) { // Compare characters
                        if (searchWord[it] == sentence[l]) {
                            l++;
                            it++;
                            if (it == length) { // If all characters match
                                return ord; // Return the word index
                            }
                        } else { // Reset pointers for the next word
                            it = 0;
                            l = r + 1;
                            break;
                        }
                    }
                } else {
                    l = r + 1; // Move to the next word
                }
            }
            r++; // Increment right pointer
        }

        return -1; // Return -1 if no match is found
    }
};