test

// Scanner scanner=new Scanner(System.in);// System.out.println("请输入一个整数：");// long ss=scanner.nextLong();// String flag=(ss%2==0)?"偶数":"奇数";// System.out.println(flag);//乘法口诀/*for(int i=1;i<=9;i++){for(int j=1;j<=i;j++){System.out.print(j+"*"+i+"="+i*j+"\t");}System.out.println();}*//* int i=0;System.out.println("十以内的全部奇数：");while(i<10){i++;if(i%2==0){continue;}System.out.print(i+"\t");}*//* int num[]={1,2,3,4,5,6,7,8,9,10};int sum=0;System.out.println("一维数组的和是：");for(int i=0;i<10;i++){if(i==9){ //判断数组的下标是否是9System.out.print(num[i]+"=");}else{System.out.print(num[i]+"+");}sum=sum+num[i];}System.out.print(sum);*///求一维数组中最小值/* int num[]={6,8,4,5,1};int min=num[0];for(int i=0;i<num.length;i++){if(num[i]<min){min=num[i];}}System.out.println(min);*///数组排序/*int arr[]=new int[]{5,6,3,4};int arr2[]=Arrays.copyOf(arr, 5);Arrays.sort(arr2);for(int i=0;i<arr2.length;i++){System.out.print(arr2[i]+"\t");}long memory=Runtime.getRuntime().totalMemory()/1024/1024;System.out.println("占用内存(mb)总数为："+memory);*//*String str=new String("abc ABC");System.out.println(str.toLowerCase());System.out.println(str.toUpperCase());*//*String s=new String("abc,def。ghi,jkl");String[] ss=s.split(",|。");for(int i=0;i<ss.length;i++){System.out.println(ss[i]);}*///今天星期几// Date date=new Date();// System.out.println(String.format("%ta", date));/* String str1="学是学";StringBuilder str2=new StringBuilder(str1);str2.reverse();int count=0;for(int i=0;i<str1.length();i++){if(str1.charAt(i)!=str2.charAt(i)){System.out.println("不是回文诗！！！");break;}if(str1.charAt(i)==str2.charAt(i)){count++;}}if(count==str1.length())System.out.println("是回文诗！！！");*/// String str2="➢-深圳大学";// System.out.println(str2.replaceAll("\\pZ|\\pC|\\pS", ""));// for(int i =1;i<=9;i++){// for(int j=1;j<=i;j++){// System.out.print(j+"*"+i+"="+j*i+"\t");// }// System.out.println();// }// List list=new ArrayList();// list.add("a");// list.add("a");// list.add("b");// list.add("apple");// list.add("apple");// Set set=new HashSet();// set.addAll(list);// Iterator it=set.iterator();// while(it.hasNext()){// System.out.println(it.next()+"\t");// }// Map map=new HashMap();// map.put("1", "apple");// map.put("2", "banana");// for(int i=1;i<3;i++){// System.out.println("第"+i+"个元素是:"+map.get(""+i+""));// }