House of cards (version 1)

Question

Version 2 here.

Simple challenge: given an integer, draw a house of cards with the given number of stories. If the number is negative, draw the house upside-down. Examples:

Input: 2
Output:

 /\
 --
/\/\

Input: 5
Output:

    /\
    --
   /\/\
   ----
  /\/\/\
  ------
 /\/\/\/\
 --------
/\/\/\/\/\

Input: 0
Output: <empty, whitespace or newline>

Input: -3
Output:

\/\/\/
 ----
 \/\/
  --
  \/

Input can be numeric or a string. Output must be exactly as shown, with leading and/or trailing spaces and newlines allowed.

This is code-golf, so may the shortest program/function for each language win!

@Shaggy yes, you can also have leading whitespaces and newlines, as long as you draw the house of cards exactly as shown. I don't mind if it is not aligned to the left of the screen. — Charlie, Jul 10, 2017 at 11:36

Rod · Accepted Answer · 2017-07-11 17:30:09Z

14

Python 2, 97 95 94 92 bytes

^{-2 bytes thanks to Luka}
^{This version produces an exception on n=0,but without printing anything}

n=input()*2
m=abs(n)
for i in range(2,m+1)[::n/m]:print(i/2*'/-\-'[i%2::2][::n/m]).center(m)

Try it online!

Non-error version, Python 2, 94 bytes

n=input()*2
x=n>0 or-1
for i in range(2,x*n+1)[::x]:print(i/2*'/-\-'[i%2::2][::x]).center(n*x)

Try it online!

edited Jul 11, 2017 at 17:30

answered Jul 10, 2017 at 11:49

Rod

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\$\begingroup\$ x=n>0 or-1 => x=n>0or-1 \$\endgroup\$
– Adalynn
Jul 10, 2017 at 17:38
\$\begingroup\$ @Zacharý doesn't work, 0or will be interpreted as an octa number \$\endgroup\$
– Rod
Jul 10, 2017 at 17:42
\$\begingroup\$ Cut 2 more bytes: m=abs(n). Then, instead of x put n/m, instead of x*n put m \$\endgroup\$
– Luka
Jul 10, 2017 at 20:44

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Emigna · Accepted Answer · 2017-07-10 12:24:15Z

05AB1E, 30 29 24 bytes

ÄF„--N×„/\N>×}).C∊2ä¹0‹è

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Explanation

ÄF                         # for N in [0 ... abs(input-1)] do:
  „--N×                    # push the string "--" repeated N times
       „/\N>×              # push the string "/\" repeated N+1 times
             }             # end loop
              )            # wrap stack in a list
               .C          # pad strings on both sides to equal length
                 ∊         # vertically mirror the resulting string
                  2ä       # split in 2 parts
                    ¹0‹    # push input < 0
                       è   # index into the the list with the result of the comparison

Jörg Hülsermann · Accepted Answer · 2017-07-10 16:19:11Z

7

PHP, 125 bytes

input negative leading newline

input positive trailing newline

for($s=str_pad;++$i<$b=2*abs($argn);)$t.=$s($s("",2*ceil($i/2),["-","/\\"][1&$i]),$b," ",2)."
";echo$argn>0?$t:$t=strrev($t);

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PHP, 130 bytes

for(;++$i<$b=2*abs($a=$argn);)echo($s=str_pad)($s("",2*abs(($a<0?$a:$i&1)+($i/2^0)),["-",["/\\","\/"][0>$a]][1&$i]),$b," ",2)."
";

Try it online!

edited Jul 10, 2017 at 16:19

answered Jul 10, 2017 at 12:32

Jörg Hülsermann

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Community · Accepted Answer · 2020-06-17 09:04:33Z

MATL, 39 bytes

|:"G|@-:~'/\'G0<?P]@E:)htg45*c]xXhG0<?P

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Explanation

|         % Implicitly input, N. Absolute value
:"        % For k from 1 to that
  G|      %   Push absolute value of N again
  @-      %   Subtract k
  :       %   Range [1 2 ... N-k]
  ~       %   Convert to vector of N-k zeros
  '/\'    %   Push this string
  G0<     %   Is input negative?
  ?       %   If so
    P     %     Reverse that string (gives '\/')
  ]       %   End
  @E      %   Push 2*k
  :       %   Range [1 2 ... 2*k]
  )       %   Index (modularly) into the string: gives '/\/\...' or '\/\/...'
  h       %   Horizontally concatenate the vector of zeros and the string. Zeros
          %   are implicitly converted to char, and will be shown as spaces
  t       %   Duplicate
  g       %   Convert to logical: zeros remain as 0, nonzeros become 1
  45*c    %   Multiply by 45 (ASCII for '=') and convert to char
]         % End
x         % Delete (unwanted last string containing '=')
Xh        % Concatenate into a cell array
G0<       % Is input negative?
?         % If so
  P       %   Reverse that cell array
          % Implicit end. Implicit display

Man, that was fast!! I hope version 2 won't be so easy... :-) — Charlie, Jul 10, 2017 at 11:41

Keyu Gan · Accepted Answer · 2017-07-10 16:02:51Z

4

C (gcc), 169 171 173 160 164 bytes

#define F(A,B,C)for(i=A;B--;)printf(C);
#define P puts("");F(y,i," ")F(abs(n)-y
s,i,x,y;f(n){x=n<0;for(s=x?1-n:n;s--;){y=x?-n-s:s;P,i,x?"\\/":"/\\")y+=x;P,s>x&&i,"--")}}

+13 bytes for negative case bug.

Try it online!

Ungolfed (207 bytes after removing all spaces and newline):

s, i, x, y;
f(n) {
  x = n < 0;
  for (s = x ? 1 - n : n; s--;) {
    y = x ? - n - s : s;
    puts("");
    for (i = y; i--;) printf(" ");
    for (i = abs(n) - y; i--;) printf(x ? "\\/" : "/\\");;
    y += x;
    puts("");
    for (i = y; i--;) printf(" ");
    for (i = abs(n) - y; s > x && i--;) printf("--");;
  }
}

edited Jul 10, 2017 at 16:02

answered Jul 10, 2017 at 12:51

Keyu Gan

2,15310 silver badges25 bronze badges

1

\$\begingroup\$ @officialaimm fixed! thanks \$\endgroup\$
– Keyu Gan
Jul 10, 2017 at 15:55
\$\begingroup\$ Suggest L"尯⽜"+x instead of x?"\\/":"/\\" \$\endgroup\$
– ceilingcat
Jul 10, 2020 at 16:54

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Neil · Accepted Answer · 2017-08-24 12:40:51Z

4

Charcoal, 31 28 27 bytes

ＦＩ⊟⪪θ-«←ι↓→/…\/ι↙»‖Ｍ¿‹Ｎ⁰‖Ｔ↓

Try it online! Link is to verbose version of code. I had about 4 different 32 byte answers then found this. Edit: Saved 3 4 bytes by performing the abs using string manipulation. Explanation:

   ⪪θ-                          Split the input (θ = first input) on -
  ⊟                             Take the (last) element
 Ｉ                              Convert it to a number i.e. abs(θ)
Ｆ     «                         Repeat that many times
       ←ι                       Print half of the -s
         ↓                      Position for the /\s
          →/                    Print the first /
            …\/ι                Print half of any remaining \/s
                ↙               Position for the next row of -s
                 »              End of the loop
                  ‖Ｍ            Mirror everything horizontally
                    ¿‹Ｎ⁰        If the input was negative
                        ‖Ｔ↓     Reflect everything vertically

edited Aug 24, 2017 at 12:40

answered Jul 10, 2017 at 12:08

Neil

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\$\begingroup\$ I knew that a Charcoal answer would end with ¿‹θ⁰‖Ｔ↓. :-) \$\endgroup\$
– Charlie
Jul 10, 2017 at 12:12
\$\begingroup\$ When Charcoal is beaten by 05AB1E on an ASCII-art challenge O_o \$\endgroup\$
– Gryphon
Jul 10, 2017 at 13:16
\$\begingroup\$ @Gryphon I don't have a one-byte abs... \$\endgroup\$
– Neil
Jul 10, 2017 at 13:20
\$\begingroup\$ True, it's just weird to see this though. Makes you wonder what the world's coming to. \$\endgroup\$
– Gryphon
Jul 10, 2017 at 13:33
\$\begingroup\$ Yeah, this'd be 23 bytes with an abs builtin. (Congrats on 48K, btw) \$\endgroup\$
– ETHproductions
Jul 10, 2017 at 16:24

| Show 1 more comment

Justin Mariner · Accepted Answer · 2017-07-11 18:58:59Z

Japt, 40 38 bytes

-2 bytes thanks to @Shaggy

o½½@aXc)ç +"--/\\\\/"ò gYv *Ug)pXc aÃ·

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Explanation

o½½@aXc)ç +"--/\\\\/"ò gYv *Ug)pXc aÃ·              // implicit: U = input integer
o.5,.5,XYZ{UaXc)ç +"--/\\\\/"ò gYv *Ug)pXc a} qR    // ungolfed
o.5,.5,                                             // array [.5,U] with step size .5
       XYZ{                                 }       // mapped by the function: (X = value, Y = index)
           UaXc)                                    //   absolute diff between U and ceil(X)
                ç                                   //   " " times that value
                  +"--/\\\\/"ò g      )             //   plus ["--","/\","\/"].get(...
                                Yv                  //     if Y is even, 1, else 0
                                   *Ug              //     times sign(U)
                                       pXc a        //   repeated abs(ceil(X)) times
                                              qR    // all that joined with newlines

\$\begingroup\$ 38 bytes. \$\endgroup\$
– Shaggy
Jul 11, 2017 at 16:37 — Shaggy, Jul 11, 2017 at 16:37

Business Cat · Accepted Answer · 2017-07-12 19:00:29Z

Gaia, 21 bytes

:┅“/\\“--”×¦¦_€|ḣ¤ọ×ṣ

Explanation

:                      Push 2 copies of the input
 ┅                     Get the range to the input. If positive: [1 .. n]. If negative: 
                       [-1 .. n]. If zero: [0].
  “/\\“--”             Push ["/\", "--"]
          ×¦¦          Repeat both of those strings by each number in the range. Strings go
                       in reverse order when repeated a negative number of times.
             _         Flatten the list
              €|       Centre-align the rows of the list
                ḣ      Remove the last row (the "--"s on the bottom)
                 ¤     Swap (bring input back to the top)
                  ọ    Sign: -1 for negative, 0 for 0, 1 for positive
                   ×   Repeat the list that many times; (-1 × list) reverses it
                    ṣ  Join with newlines and implicitly output

Community · Accepted Answer · 2020-06-17 09:04:33Z

1

Mathematica, 140 bytes

(T=Table;z=Column;B[a_]:=""<>"/\\"~T~a;If[#>0,m=0,m=Pi];z[Join[z/@T[{B@i,""<>"--"~T~i},{i,Abs@#-1}],{B@Abs@#}],Alignment->Center]~Rotate~m)&

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jul 10, 2017 at 13:52

ZaMoC

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ovs · Accepted Answer · 2017-07-10 20:13:39Z

1

Retina, 116 111 105 bytes

this got way too long :/

\d+
$*
+`^~?( *1*)1
 $1¶$&¶_$&
.*$

+`(_.*)1
$1--
1
/\
Ts`/\\`\\/`.*~.*
+`(.*)¶((.*¶)*)(~.*)
$2$4¶$1
~|_

Try it online!

negative input is denoted as ~n

edited Jul 10, 2017 at 20:13

answered Jul 10, 2017 at 19:35

ovs

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Xcali · Accepted Answer · 2017-08-24 22:47:22Z

1

Perl 5, 100 + 1 (-n) = 101 bytes

$/=$_>0?'/\\':'\\/';push@r,$_=$"x--$q.$/x$_,y|/\\|-|r for 1..($q=abs);pop@r;say for$_<0?reverse@r:@r

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answered Aug 24, 2017 at 22:47

Xcali

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Stack Exchange Network

House of cards (version 1)

11 Answers 11

Python 2, 97 95 94 92 bytes

Non-error version, Python 2, 94 bytes

05AB1E, 30 29 24 bytes

PHP, 125 bytes

PHP, 130 bytes

MATL, 39 bytes

Explanation

C (gcc), 169 171 173 160 164 bytes

Charcoal, 31 28 27 bytes

Japt, 40 38 bytes

Explanation

Gaia, 21 bytes

Explanation

Mathematica, 140 bytes

Retina, 116 111 105 bytes

Perl 5, 100 + 1 (-n) = 101 bytes

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House of cards (version 1)

11 Answers 11

Python 2, 97 95 94 92 bytes

Non-error version, Python 2, 94 bytes

05AB1E, 30 29 24 bytes

PHP, 125 bytes

PHP, 130 bytes

MATL, 39 bytes

Explanation

C (gcc), 169 171 173 160 164 bytes

Charcoal, 31 28 27 bytes

Japt, 40 38 bytes

Explanation

Gaia, 21 bytes

Explanation

Mathematica, 140 bytes

Retina, 116 111 105 bytes

Perl 5, 100 + 1 (-n) = 101 bytes

Your Answer

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Post as a guest

Not the answer you're looking for? Browse other questions tagged code-golfascii-art or ask your own question.

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Hot Network Questions

Not the answer you're looking for? Browse other questions tagged
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