编程介的小学生 2020-01-07 00:51 采纳率: 20.5%
浏览 65

Quicksum 快速求和

Problem Description
A checksum is an algorithm that scans a packet of data and returns a single number. The idea is that if the packet is changed, the checksum will also change, so checksums are often used for detecting transmission errors, validating document contents, and in many other situations where it is necessary to detect undesirable changes in data.

For this problem, you will implement a checksum algorithm called Quicksum. A Quicksum packet allows only uppercase letters and spaces. It always begins and ends with an uppercase letter. Otherwise, spaces and letters can occur in any combination, including consecutive spaces.

A Quicksum is the sum of the products of each character's position in the packet times the character's value. A space has a value of zero, while letters have a value equal to their position in the alphabet. So, A=1, B=2, etc., through Z=26. Here are example Quicksum calculations for the packets "ACM" and "MID CENTRAL":

ACM: 1*1 + 2*3 + 3*13 = 46MID CENTRAL: 1*13 + 2*9 + 3*4 + 4*0 + 5*3 + 6*5 + 7*14 + 8*20 + 9*18 + 10*1 + 11*12 = 650

Input
The input consists of one or more packets followed by a line containing only # that signals the end of the input. Each packet is on a line by itself, does not begin or end with a space, and contains from 1 to 255 characters.

Output
For each packet, output its Quicksum on a separate line in the output.

Sample Input
ACM
MID CENTRAL
REGIONAL PROGRAMMING CONTEST
ACN
A C M
ABC
BBC
#

Sample Output
46
650
4690
49
75
14
15

  • 写回答

0条回答 默认 最新

    报告相同问题?

    悬赏问题

    • ¥15 Python时间序列如何拟合疏系数模型
    • ¥15 求学软件的前人们指明方向🥺
    • ¥50 如何增强飞上天的树莓派的热点信号强度,以使得笔记本可以在地面实现远程桌面连接
    • ¥15 MCNP里如何定义多个源?
    • ¥20 双层网络上信息-疾病传播
    • ¥50 paddlepaddle pinn
    • ¥20 idea运行测试代码报错问题
    • ¥15 网络监控:网络故障告警通知
    • ¥15 django项目运行报编码错误
    • ¥15 STM32驱动继电器