3094. Quicksum
2017-07-22 12:59
169 查看
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”:
MID 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
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 = 46
MID 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
思路
简单题。不过要注意读取输入时,要用gets_s()函数,如果用cin的话,输入中的空格会被当做输入结束的条件,导致错误输出。代码
#include <iostream> #include <string.h> #include <stdio.h> using namespace std; int main() { char a[256]; gets_s(a); while (a[0] != '#') { int sum = 0; for (int i = 0; i < strlen(a); i++) { if (a[i] >= 'A' && a[i] <= 'Z') { sum = sum + (a[i] - 'A' + 1) * (i + 1); } } cout << sum << endl; gets_s(a); } return 0; }
相关文章推荐
- POJ 3094 Quicksum(简单题)
- POJ 3094 Quicksum
- POJ 3094 Quicksum
- POJ 刷题系列:3094. Quicksum
- POJ 3094 Quicksum(水题) 涉及到字…
- POJ-3094-Quicksum-2013-12-02 21:10:02
- poj3094 Quicksum
- Poj 3094 Quicksum
- poj 3094 Quicksum
- POJ 3094 Quicksum
- POJ 3094 Quicksum【水水】
- POJ 3094 Quicksum 水
- POJ 3094 Quicksum
- POJ 3094/ ZOJ 2812: Quicksum 【.get()】
- poj 3094 Quicksum
- POJ 3094 Quicksum
- POJ 3094 Quicksum 难度:0
- POJ 3094 Quicksum 水题
- POJ 3094 - Quicksum
- POJ- 3094 Quicksum-给规律求字符值