Circular Sentence

class Solution {
public:
    bool isCircularSentence(string sentence) {
        // Get the length of the sentence
        int n = sentence.size();

        // First check: Compare first and last character of sentence
        // For a circular sentence, they must match
        if(sentence[0] != sentence[n-1]) return false;

        // Iterate through the sentence, starting from index 1 to n-2
        // We don't need to check first and last characters again
        for(int i=1; i<n-1; i++){
            // When we find a space character
            if(sentence[i] == ' '){
                // Check if the character before space (last char of current word)
                // matches the character after space (first char of next word)
                if(sentence[i-1] != sentence[i+1]) return false;
            }
        }

        // If we made it through all checks, the sentence is circular
        return true;
    }
};