杭电2549 壮志难酬

最新推荐文章于 2019-11-24 17:04:20 发布

原创最新推荐文章于 2019-11-24 17:04:20 发布 · 380 阅读

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#杭电2549 壮志难酬 #杭电2549题 #壮志难酬 #算法基础题 #ACM入门题

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import java.util.Scanner;

 
public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int t = sc.nextInt();
            for (int i = 0; i < t; i++) {
                double d = sc.nextDouble();
                int n = sc.nextInt();
                String str = String.valueOf(d);
                int start = str.indexOf(".");
                String PointbBehind = str.substring(start+1, str.length());
                int lenght = PointbBehind.length();
                 if (lenght >= n) {
                    char result = PointbBehind.charAt(n - 1);
                    System.out.println(result);
                } else if(lenght<n){
                    System.out.println("0");
                }else{
                }
            }
        }
    }
}