Length of Last Word

main.dart

void main() {
  Solution solution = Solution();
  
  // Test Case 1
  String s1 = "Hello World";
  print('Test Case 1:');
  print('Input: "$s1"');
  print('Expected Output: 5');
  print('Actual Output: ${solution.lengthOfLastWord(s1)}');
  print('');
  
  // Test Case 2
  String s2 = "   fly me   to   the moon  ";
  print('Test Case 2:');
  print('Input: "$s2"');
  print('Expected Output: 4');
  print('Actual Output: ${solution.lengthOfLastWord(s2)}');
  print('');
  
  // Test Case 3
  String s3 = "luffy is still joyboy";
  print('Test Case 3:');
  print('Input: "$s3"');
  print('Expected Output: 6');
  print('Actual Output: ${solution.lengthOfLastWord(s3)}');
  print('');
  
  // Additional Test Cases
  String s4 = "a";  // Single character
  print('Test Case 4:');
  print('Input: "$s4"');
  print('Expected Output: 1');
  print('Actual Output: ${solution.lengthOfLastWord(s4)}');
  print('');
  
  String s5 = "Hello";  // Single word
  print('Test Case 5:');
  print('Input: "$s5"');
  print('Expected Output: 5');
  print('Actual Output: ${solution.lengthOfLastWord(s5)}');
}

class Solution {
  int lengthOfLastWord(String s) {
    // TODO: Implement your solution here
    return -1; // Placeholder return
  }
}