HDOJ 1330 Deck

HDACM 1330

习惯性打表，一次性过

import java.util.Scanner;public class Main{    public static void main(String[] args) {        double len[] = new double[100000];        double sum = 0;        for (int i = 1; i < len.length; i++) {            sum += 1.0/(i*2);            len[i]=sum;        }        Scanner sc = new Scanner(System.in);        boolean isFirst = true;        while (sc.hasNext()) {            if (isFirst) {                System.out.println("# Cards  Overhang");                isFirst = false;            }            int n = sc.nextInt();            System.out.printf("%5d     %.3f",n,len[n]);            System.out.println();        }    }}