1140: 小数点后第n位 多实例java

import java.util.Scanner;

public class oj1 {
    public static void main(String[] args){
        Scanner input = new Scanner(System.in);
        int t = input.nextInt();
        for (int i = 0; i < t; i++) {
            String s = input.next();
            int k = input.nextInt();
            String[] split = s.split("\\.");

            if(k<=split[1].length())
            System.out.println(split[1].toCharArray()[k-1]);
            else System.out.println(0);
        }
    }
}