Sicily 1129. ISBN
来源:互联网 发布:vue双向数据绑定面试 编辑:程序博客网 时间:2024/05/14 13:29
Time Limit: 10 secs, Memory Limit: 32 MB
Description
Practically every book that has been published during the past thirty years can be uniquely identified by its International Standard Book Number (ISBN). An example of an ISBN is
963-10-0604-2.
¨ An ISBN has 13 characters.
¨ Exactly three of the 13 characters are hyphens.
n The first (leftmost) character of the ISBN is not a hyphen.
n The next-to-last character of the ISBN is a hyphen.
n No two hyphens occupy adjacent positions.
¨ The last (rightmost) character is either a decimal digit (0..9) or an upper case X.
¨ The nine characters which are not in the rightmost position and are not hyphens are decimal digits.
The rightmost character is known as the check digit. It can actually be calculated from the other digits, according to the following steps (as each step is stated, it will be illustrated using the example 963-10-0604-2).
1. Assign numbers 10,9,8,… as the respective “weights” to the first, second, third, … digit:
Calculate the weighted sum by adding the products obtained by multiplying each of the first nine digits by its weight:
10*9 + 9*6 + 8*3 + 7*1 + 6*0 + 5*0 + 4*6 + 3*0 + 2*4 = 207.- The check digit is the smallest non-negative number that can be added to the weighted sum in order to get a number that is divisible by 11. The check digit is always in the range 0..10. If it is equal to 10, we denote it by an upper case X. In the given example, the check digit is 2, because 207 + 2 = 209, which is divisible by 11.
Input
The input file will contain one or more lines. Each line will contain the first 11 characters of an ISBN, starting in column 1. The input will not contain any white spaces, except for the end-of-line characters.
Output
In the output, each incomplete ISBN from the input will be completed: the third hyphen and the check digit will have been added. The output will contain one ISBN per line, starting at column 1.
Sample Input
0-07-109219
0-534-95054
963-10-0604
1-890880-01
Sample Output
0-07-109219-6
0-534-95054-X
963-10-0604-2
1-890880-01-9
O(∩_∩)O~~ Just do it!
#include <iostream>#include <string>using namespace std;int main(){ string str; int digit, sum; while (cin >> str) { sum = 0; digit = 10; /// for (int i = 0; i < str.size(); i++) if (str[i] != '-') sum += (str[i] - 48) * (digit--); /// int i = sum; while (i % 11 != 0) i++; /// if (i - sum > 9) cout << str << "-X" << endl; else cout << str << "-" << i - sum << endl; } return 0;}
- sicily--1129. ISBN
- Sicily 1129. ISBN
- SICILY 1129. ISBN
- sicily 1129. ISBN
- [sicily]1129. ISBN
- Sicily 1129. ISBN
- sicily ISBN
- ISBN Sicily
- Sicily ISBN
- 1129. ISBN
- ISBN
- ISBN
- isbn
- ISBN
- ISBN
- ISBN
- 【模拟】ISBN
- ISBN号码
- Unity中消息事件的封装与运用
- 5种类型的程序员
- LeetCode: 012- Reverse Linked List
- 回归csdn
- hdu3998 最长上升子序列及其个数 dp或dp+最大流
- Sicily 1129. ISBN
- [原]unity3d之http多线程异步资源下载
- 程序员要如何学英语?
- android shape使用
- 字符转码开源库libiconv目前还不支持64位
- C语言:关于字符串的编程题
- RedHatLinux6.5下安装无线网卡驱动
- 程序员从优秀到卓越的几点建议
- thinker学习笔记processbar