package object;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.OutputStream;public class TEST {public static void main(String[] args) {String s=new String("12345");System.out.println("有几个数字？"+s.length());}}方法是s.length...
booleanisMultipleOfThree(intn){while(n>=10){List<Integer>digits=getDigits(n);n=sum(digits);}...
booleanisMultipleOfThree(intn){while(n>=10){List<Integer>digits=getDigits(n);n=sum(digits);}...