摘要： public class Count3Quit{ //从数组的角度 public void m1(){ boolean[] child = new boolean[500]; for(int i=0;i<child.length;i++){ child[i] = true; } int count 阅读全文

摘要： import java.util.*; public class OrderDate{ public static void main(String[] args){ Date[] days = new Date[5]; days[0] = new Date(2020,1,1); days[1] = 阅读全文