代码高尔夫:流水
挑战
根据输入的土地 ASCII 表示形式来识别和标记洼地的字符数最短代码。
输入将是景观的 ASCII 表示,包括丘陵、山谷和平坦的土地。该程序应该模拟如果被洪水淹没的情况下的景观会是什么样子——所有的山谷都充满水(字符x
)。
景观将始终以字符 _
开始和结束,并且长度至少为 2 个字符,从而形成最短的输入 __
。
山被定义为凸起,并且不应充满水:
__
_/ \_
山谷被定义为凹陷,将充满水,直到遇到平地:
_ _
\__/
输入可以假设是干净的,并且仅由字符空间( )、换行符 (
\n
)、下划线 (_
) 以及正斜杠和反斜杠(/
和 <代码>\)。输入可以被视为连续的行,任何包含不明确的行输入(例如 _/_
或 )的输入都
_ _
\_/
/ \
被视为无效。
对于水下洞穴,如果洞穴水位高于水面,应保持水位。
测试用例
Input:
__/\__
\__
\ ___ ___________
/ / \_ \_
\_____/ \__ _/
\/
Output:
__/\__
\__
\ ___ ___________
/xxxxxx/ \xxxxxx\_
\xxxxx/ \xxxxx/
\/
Input:
__ ___
/ \_____/
/ _______
________ / \ /
_____/ \ /__ \ \_
____ / \ /__/ __/
\_ / \ ____/
\______\ /____/
Output:
__ ___
/ \xxxxx/
/ _______
________ / \ /
_____/ \xxx/__ \xxxx\_
____ / \xxxx/__/xxxxx/
\xxxxxxxx/ \xxxxxxxxx/
\xxxxxx\ /xxxx/
Input:
__ _
_ ____ ____ _____/ \ /
\ / \ __________/ \ __/ ___ /___\
\___/ \ \ \ \___/ /_
/________\ \___________\
Output:
__ _
_ ____ ____ _____/ \xxx/
\xxxxx/ \xxxxxxxxxxxxxxxxxx/ \xxxxxx/ ___ /xxx\
\xxx/ \xxxxxxx\ \xxx\___/xx/_
/xxxxxxxx\ \xxxxxxxxxxx\
代码计数包括输入/输出(即完整程序)。
The challenge
The shortest code by character count to identify and mark water depressions in the ASCII representation of a land from input.
Input will be an ASCII representation of a landscape, having hills, valleys and flat lands. The program should simulate what the landscape would look like if if was flooded - filling all valleys with water (character x
).
The landscape will always start and stop with the character _
and will be at least 2 characters long, making the shortest input __
.
A hill is defined as a raise, and should not be filled with water:
__
_/ \_
A valley is defined as a depression and will be filled with water until a flatland is encountered:
_ _
\__/
Input can be assumed clean and will be composed only from the characters space (), newline (
\n
), underscore (_
), and forward and backward slashes (/
and \
). Input can be seen as a continuous line, and any input that contains ambiguous line input such as _/_
or
_ _
\_/
/ \
Is considered invalid.
Regarding underwater caves, water level should be maintained if cave level goes above water level.
Test cases
Input:
__/\__
\__
\ ___ ___________
/ / \_ \_
\_____/ \__ _/
\/
Output:
__/\__
\__
\ ___ ___________
/xxxxxx/ \xxxxxx\_
\xxxxx/ \xxxxx/
\/
Input:
__ ___
/ \_____/
/ _______
________ / \ /
_____/ \ /__ \ \_
____ / \ /__/ __/
\_ / \ ____/
\______\ /____/
Output:
__ ___
/ \xxxxx/
/ _______
________ / \ /
_____/ \xxx/__ \xxxx\_
____ / \xxxx/__/xxxxx/
\xxxxxxxx/ \xxxxxxxxx/
\xxxxxx\ /xxxx/
Input:
__ _
_ ____ ____ _____/ \ /
\ / \ __________/ \ __/ ___ /___\
\___/ \ \ \ \___/ /_
/________\ \___________\
Output:
__ _
_ ____ ____ _____/ \xxx/
\xxxxx/ \xxxxxxxxxxxxxxxxxx/ \xxxxxx/ ___ /xxx\
\xxx/ \xxxxxxx\ \xxx\___/xx/_
/xxxxxxxx\ \xxxxxxxxxxx\
Code count includes input/output (i.e full program).
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评论(4)
C -
741621600 个字符(但可以正确处理新情况)C -
741621600 characters (but handles the new cases properly)Ruby,
794 759 769 752 715 692 663 655 626616其他测试用例:
http://pastie.org/708281 和
http://pastie.org/708288 和
http://pastie.org/708310
压缩(缩进除外):
Ruby,
794 759 769 752 715 692 663 655 626616Additional test cases:
http://pastie.org/708281 and
http://pastie.org/708288 and
http://pastie.org/708310
Compressed except for indent:
Python,
702 805 794 778 758 754 710651处理 DigitalRoss 的测试用例,以及大型测试用例,例如 http://pastie.org/708764。
示例运行
代码
Python,
702 805 794 778 758 754 710651Handles DigitalRoss's test cases, as well as large test cases such as http://pastie.org/708764.
Example run
Code
Perl,534
545 550 566 569 567 578 594 596这可以处理我见过的所有测试用例。换行符是可选的,仅用于格式化。
将其命名为
perl water.pl test.txt
。这是另一个有趣的边缘情况(无论如何对于我的算法来说)不在前面的任何示例中:
我之前提出的 详细版本 仍然失败。
Perl, 534
545 550 566 569 567 578 594 596This handles all the test cases that I've seen. Newlines are optional and are only there for formatting.
Call it as e.g.
perl water.pl test.txt
.Here's another funny edge case (for my algorithm anyway) not in any of the previous examples:
The verbose version I'd put up earlier still fails on that.