2024/2/25 洛谷做题记录-优快云博客

本文链接：https://blog.youkuaiyun.com/jimmyfj/article/details/136281548

本文介绍了使用Java内置的BigInteger类进行高精度算术运算的实例，包括加法、乘法、除法和取模，通过Scanner获取用户输入并展示结果。

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这次是高精度。
因为 Java 自带高精度，就直接用了。（手搓高精度的话，有时间再更吧。）

P1303 A*B Problem

import java.util.Scanner;
import java.math.BigInteger;

public class Main{
    public static void main(String[] args){
        Scanner cin=new Scanner(System.in);
        BigInteger a=new BigInteger(cin.next()),b=new BigInteger(cin.next());
        System.out.println(a.multiply(b));
    }
}

P1601 A+B Problem（高精）

import java.util.Scanner;
import java.math.BigInteger;

public class Main{
    public static void main(String[] args){
        Scanner cin=new Scanner(System.in);
        BigInteger a=new BigInteger(cin.next()),b=new BigInteger(cin.next());
        System.out.println(a.add(b));
    }
}

P1480 A/B Problem

import java.util.Scanner;
import java.math.BigInteger;

public class Main{
    public static void main(String[] args){
        Scanner cin=new Scanner(System.in);
        BigInteger a=new BigInteger(cin.next()),b=new BigInteger(cin.next());
        System.out.println(a.divide(b));
    }
}

P2005 A/B Problem II

import java.util.Scanner;
import java.math.BigInteger;

public class Main{
    public static void main(String[] args){
        Scanner cin=new Scanner(System.in);
        BigInteger a=new BigInteger(cin.next()),b=new BigInteger(cin.next());
        System.out.println(a.divide(b));
    }
}

P1932 A+B A-B A*B A/B A%B Problem

import java.util.Scanner;
import java.math.BigInteger;

public class Main{
    public static void main(String[] args){
        Scanner cin=new Scanner(System.in);
        BigInteger a=new BigInteger(cin.next()),b=new BigInteger(cin.next());
        System.out.println(a.add(b));
        System.out.println(a.subtract(b));
        System.out.println(a.multiply(b));
        System.out.println(a.divide(b));
        System.out.println(a.mod(b));
    }
}