[Java] Compare values / strings (AOJ14 --card game)

Compare values and strings

• ** compareTo method **
• The return value is the value of the method caller (variable 1)-the value of the argument (variable 2)
• Left value-Right value = Positive: 1
• Left value-Right value = Negative: -1
• Left value-Right value = 0: 0
• Date and time can also be compared
• ** compareToIgnoreCase method **: String case insensitive

import java.util.Date;
public class Main {
 
	public static void main(String[] args) {
 
		String str1 = "a";
		String str2 = "b";
		String str3 = "A";
 		Date date1 = new Date(2017, 3, 28, 16, 20, 22);
		Date date2 = new Date(2017, 3, 29, 16, 20, 24);
 
		System.out.println(str1.compareTo(str2)); //-1
		System.out.println(str2.compareTo(str1)); //1
		System.out.println(str1.compareTo(str1)); //0
		System.out.println(str1.compareTo(str3)); //32
		System.out.println("===");
		System.out.println(str1.compareToIgnoreCase(str3)); //0
		System.out.println("===");
		System.out.println(date1.compareTo(date2)); //-1
		System.out.println(date2.compareTo(date1)); //1
		System.out.println(date1.compareTo(date1)); //0
	}
}

Card game (ITP1-9)

Taro and Hanako play a card game. Each of them has n cards and plays n turns. Take out one card each turn. The name of the animal in the alphabet is written on the card, and the one with the largest alphabetical order wins the turn. 3 points will be added to the winner, and 1 point will be added to each draw. Create a program that reads the information on the cards that Taro and Hanako have and outputs the scores after the game is over. Constraints

• The input given n does not exceed 1000.
• The length of the given string is 100 or less and contains only lowercase letters. Input The number n of cards is given in the first line. The following n lines are given the card information for each turn. The first character string is the character string written on Taro's card, and the second character string is the character string written on Hanako's card. Output Output the first number as Taro's score and the second number as Hanako's score on one line. Output one space between the two numbers. Sample Input 3 cat dog fish fish lion tiger Sample Output 1 7

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int a = scanner.nextInt();
		int Taro = 0;
		int Hanako = 0;

		for (int i = 0; i < a; i++) {
			String b = scanner.next();
			String c = scanner.next();
			if (b.compareTo(c) > 0)
				Taro += 3;
			else if (b.compareTo(c) < 0)
				Hanako += 3;
			else {
				Taro += 1;
				Hanako += 1;
			}
		}
		System.out.println(String.format("%d %d",Taro, Hanako));
	}
}