import java.util.Arrays;
import java.util.Scanner;

/**
 * description:
 * Created by gaoyw on 2018/4/30.
 */
public class ScannerTest {

    public static void testScanner(){
        Scanner reader=new Scanner(System.in);
        double sum=0;
        int m=0;
        while(reader.hasNextDouble()) {
            double
 
 x=reader.nextDouble();
            m=m+1;
            sum=sum+x;
        }
        System.out.printf("%d個數的和為%f\n",m,sum);
        System.out.printf("%d個數的平均值是%f\n",m,sum/m);
    }

    public static void testNextLine(){
        String s1,s2;
        Scanner sc=new Scanner(System.in);
        System.out
 
.print("請輸入第一個字串：");
        s1=sc.next();//next()之後cursor會依然指向本行，讀取空格前的字元
        System.out.print("請輸入第二個字串：");
        //由於cursor沒有換行，所以仍然有一個換行符存在，nextLine()會依據這個換行符自動讀取當前行
        // 需要讀取實際意義的下一行，可以在之前先呼叫sc.nextLine()
        s2=sc.nextLine();
        System.out.println("輸入的字串是："+s1+" "+s2);
    }

    public
 
 static void testNextLine2(){
        String s1,s2;
        Scanner sc=new Scanner(System.in);
        System.out.print("請輸入第一個字串：");
        s1=sc.nextLine();
        System.out.print("請輸入第二個字串：");
        s2=sc.next();
        System.out.println("輸入的字串是："+s1+" "+s2);
    }

    public static void testNextLine3(){
        String s1,s2;
        Scanner sc=new Scanner(System.in);
        System.out.print("請輸入第一個字串：");
        s1=sc.next();
        sc.nextLine();//這裡是讀取了之前沒有被讀取的換行符
        System.out.print("請輸入第二個字串：");
        s2=sc.nextLine();
        System.out.println("輸入的字串是："+s1+" "+s2);
    }

    public static void testWhile(){
        Scanner in = new Scanner(System.in);
        // 一個while就是一個測試用例
        while(in.hasNext()){
            int n = in.nextInt(); // 該測試用例後續接收的引數個數
            long[] array = new long[n];
            String[] arrayStr = new String[n];
            for(int i=0; i<n; i++){
                arrayStr[i] = in.next();
            }
            for(int i=0; i<n; i++){
                array[i] = in.nextLong();// 取下一個元素轉換成long型別
            }
            System.out.println(Arrays.toString(array)+" "+ Arrays.toString(arrayStr));
        }
    }

    public static void testBreak(){
        Scanner sc = new Scanner(System.in);
        while (!sc.hasNext("break")) {
            String input = sc.next();
            if (input.equals("finish")) break;
            System.out.println(input);
        }
        System.out.println("loop has finished");
    }

    public static void main(String[] args){
//        testScanner();
        testNextLine();
//        testNextLine2();
//        testNextLine3();
//        testWhile();
//        testBreak();
    }
}