题解 | #字符串最后一个单词的长度#

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
    String str = sc.nextLine();
	int result = lastWordLenth(str);
	System.out.println(result);
}

public static int lastWordLenth(String word) {
	int emptyIndex = word.lastIndexOf(" ");
	String lastWord = word.substring(emptyIndex + 1, word.length());
	return lastWord.length();
}

}