Java PAT练习1.0

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/** * Created by Ukiy on 2017/1/3. */import java.math.*;import  java.util.*;public class temp2 {    public static void main(String []args){        Scanner cin =new Scanner(System.in);        GregorianCalendar t=new GregorianCalendar();        long time=cin.nextLong();        t.setTimeInMillis(time);        System.out.println(t.get(Calendar.YEAR)+"-"+t.get(Calendar.MONTH)+"-"+t.get(Calendar.DAY_OF_MONTH));    }}

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/** * Created by Ukiy on 2017/1/3. */import java.math.*;import java.util.*;public class Main {    public static void main(String []args){        Scanner cin=new Scanner (System.in);        int a=cin.nextInt();        BigInteger x=BigInteger.ONE;        for(int i=2;i<=a;i++){            x=x.multiply(BigInteger.valueOf(i));        }        System.out.println(x);    }}

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输入样例:

9223372036854775839 2

/** * Created by Ukiy on 2017/1/4. */import java.math.*;import java.util.*;public class temp3 {    public static void main(String []args){        Scanner cin=new Scanner(System.in);        BigInteger m=cin.nextBigInteger();        int n=cin.nextInt();        while(n>0){            if(m.isProbablePrime(100)){                System.out.println(m);                n--;            }            m=m.nextProbablePrime();        }        cin.close();    }}

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