PTA (Advanced Level) 1027 Colors in Mars
Colors in Mars
People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for Red
, the middle 2 digits for Green
, and the last 2 digits for Blue
. The only difference is that they use radix 13 (0-9 and A-C) instead of 16. Now given a color in three decimal numbers (each between 0 and 168), you are supposed to output their Mars RGB values.
Input Specification:
Each input file contains one test case which occupies a line containing the three decimal color values.
Output Specification:
For each test case you should output the Mars RGB value in the following format: first output #
, then followed by a 6-digit number where all the English characters must be upper-cased. If a single color is only 1-digit long, you must print a 0
to its left.
Sample Input:
15 43 71
Sample Output:
#123456
题目解析
本题给出3个10进制数字要求转换为13进制数字并输出,根据题意我们可以得出,转化后的每一个数字都不会超过两位。
这样我们可以将十进制数字0~12与对应13进制数字利用map建立映射。之后将每个数字对应输出即可。
#include <bits/stdc++.h>
using namespace std;
map<int, char> radix;
void init(){ //建立十进制数与对应13进制数的映射
for(int i = ; i < ; i++)
radix[i] = i + '';
radix[] = 'A';
radix[] = 'B';
radix[] = 'C';
}
int main()
{
init();
int red, green, blue;
scanf("%d%d%d", &red, &green, &blue);
//输入三个十进制数
//输出时先输出#
cout << "#" << radix[red / ] << radix[red % ];
//输出转化后的两位数
cout << radix[green / ] << radix[green % ];
cout << radix[blue / ] << radix[blue % ] << endl;
return ;
}
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