Java 代码

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    {
        Scanner cin = new Scanner(System.in);

        String s1 = cin.nextLine();
        String s2 = cin.nextLine();

        int r = s1.compareToIgnoreCase(s2);
        if (r == 0)
            System.out.println("=");
        else if (r < 0)
            System.out.println("<");
        else if (r > 0)
            System.out.println(">");
    }
}