Build ASCII ladders

Question

Given an input of two integers n and m, output an ASCII ladder of length n and size m.

This is an ASCII ladder of length 3 and size 3:

o---o
|   |
|   |
|   |
+---+
|   |
|   |
|   |
+---+
|   |
|   |
|   |
o---o

This is an ASCII ladder of length 5 and size 1:

o-o
| |
+-+
| |
+-+
| |
+-+
| |
+-+
| |
o-o

This is an ASCII ladder of length 2 and size 5:

o-----o
|     |
|     |
|     |
|     |
|     |
+-----+
|     |
|     |
|     |
|     |
|     |
o-----o

To be specific:

• The length (n) represents how many squares the ladder is made up of.

• The size (m) represents the width and height of the interior of—that is, not counting the "borders"—each square.

• Each square is made up of the interior area filled with spaces, surrounded by -s on the top and bottom, |s on the left and right, and +s at all four corners.

• Borders between squares merge together, so two lines in a row with +--...--+ merge into one.

• The corners of the entire ladder are replaced with the character o.

• You may optionally output a trailing newline.

The length of the ladder (n) will always be ≥ 2, and the size (m) will always be ≥ 1.

Input can be taken as a whitespace-/comma-separated string, an array/list/etc., or two function/command line/etc. arguments. The arguments can be taken in whichever order is most convenient / golfiest.

Since this is code-golf, the shortest code in bytes wins.

Tip: The examples above can also be used as test cases.

Answer 1

Pyth, 34 bytes

.NjjNm*QTvz*2YjC:M++J"+|o"m"- -"QJ

Test suite

Takes arguments newline separated on STDIN.

Uses a helper function, :, which builds each type of vertical string from three characters, then replicates as necessary, transposes and joins on newlines.

Answer 2

Ruby, 71

->m,n{h=0;(?o+?+*(n-1)+?o).chars{|c|puts [?|+' '*m+?|]*h,c+?-*m+c;h=m}}

ungolfed in test program

f=->m,n{
  h=0                             #The number of | above the 1st rung is 0
  (?o+?+*(n-1)+?o).chars{|c|      #Make a string of all the rung ends o++...++o and iterate through it
    puts [?|+' '*m+?|]*h,         #draw h vertical segments |  ...  |
      c+?-*m+c                    #and a rung with the correct ends
    h=m                           #The number of | above all rungs except the 1st is m
  }
}


f[gets.to_i,gets.to_i]

Answer 3

CJam, 43 42 bytes

I'm not sastified by the score. But I'm not Dennis, right?

q~:Z;'-'o{[\Z*1$N]}:X~['-_'+X\'|XZ*]@*1>1$

Input is 2 space separated items. Length first

2 3
o---o
|   |
|   |
|   |
+---+
|   |
|   |
|   |
o---o

Explanation

q~:Z;'-'o{[\Z*1$N]}:X~['-_'+X\'|XZ*]@*1>1$
q~                                         e# read input
  :Z;                                      e# Record the size in Z and discard
     '-'o{[\Z*1$N]}:X~                     e# Create the initial line (and final). also creates a shorcut to do this later
           \                               e# Capture two arguments
            Z*                             e# The separator is repeated size times
              1$                           e# Repeat the first argument
                N                          e# Add newline
                                           e# X is a function to create line in a ladder
                      ['-_'+X\'|XZ*]       e# Design the repeating part
                                    @*     e# Repeat the pattern n times
                                      1>   e# Discard the initial
                                        1$ e# Since the final line is same than the initial, we just write it.
                                           e# Implicit printing

Answer 4

JavaScript (ES6), 89

... repeat, repeat, repeat ...

(n,m,R=x=>x.repeat(m),b=R(`|${R(' ')}|
`),d=`o${c=R('-')}o
`)=>d+R(b+`+${c}+
`,m=n-1)+b+d

Test

F=(n,m,R=x=>x.repeat(m),b=R(`|${R(' ')}|
`),d=`o${c=R('-')}o
`)=>d+R(b+`+${c}+
`,m=n-1)+b+d

// Less golfed
U=(n,m)=>
{
  var R=x=>x.repeat(m),
      a=R(' '),
      b=R(`|${a}|\n`);
      c=R('-'),
      d=`o${c}o\n`;
  m=n-1;
  return d+R(b+`+${c}+\n`)+b+d
}

function test() {
  var i=I.value.match(/\d+/g)
  if (i) O.textContent=F(+i[0],+i[1])
  console.log(i,I.value)
}  
 
test()

N,M: <input id=I value="3,5" oninput=test()>
<pre id=O></pre>

Answer 5

C#, 1412 bytes

... My first CodeGolf attempt, Not likely to win but it works so here we go:

using System;

namespace Ascii_Ladders
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = 0;
            int m = 0;

            Console.Write("Please enter Height: ");
            n = int.Parse(Console.ReadLine());
            Console.Write("Please Enter Width: ");
            m = int.Parse(Console.ReadLine());

            Console.Write("o");
            for (int i = 0; i < m; i++)
            {
                Console.Write("-");
            }
            Console.WriteLine("o");

            for (int k = 0; k < n; k++)
            {
                for (int i = 0; i < m; i++)
                {
                    Console.Write("|");
                    for (int j = 0; j < m; j++)
                    {
                        Console.Write(" ");
                    }
                    Console.WriteLine("|");
                }
                if (k != n - 1)
                {
                    Console.Write("+");
                    for (int i = 0; i < m; i++)
                    {
                        Console.Write("-");
                    }
                    Console.WriteLine("+");
                }
            }

            Console.Write("o");
            for (int i = 0; i < m; i++)
            {
                 Console.Write("-");
            }
            Console.WriteLine("o");

            Console.ReadKey();
        }
    }
}

Answer 6

Julia, 87 bytes

f(n,m)=(g(x)=(b=x[1:1])x[2:2]^m*b*"\n";(t=g("o-"))join([g("| ")^m for i=1:n],g("+-"))t)

This is a function that accepts two integers and returns a string.

Ungolfed:

function f(n::Int, m::Int)
    # Create a function g that takes a string of two characters and
    # constructs a line consisting of the first character, m of the
    # second, and the first again, followed by a newline.
    g(x) = (b = x[1:1]) * x[2:2]^m * b * "\n"

    # Assign t to be the top and bottom lines. Construct an array
    # of length n where each element is a string containing the
    # length-m segment of the interior. Join the array with the
    # ladder rung line. Concatenate all of this and return.
    return (t = g("o-")) * join([g("| ")^m for i = 1:n], g("+-")) * t
end

Answer 7

Pure bash, 132 130 128 127 bytes

Yes I could drop 1 more byte replacing last ${p% *}, but I prefer this:

p=printf\ -v;$p a %$1s;$p b %$2s;o="|$a|\n";h=+${a// /-}+\\n v=${a// /$o}
a=${b// /$h$v}${h//+/o};a=${a/+/o};${p% *} "${a/+/o}"

Sample:

ladders() {
    p=printf\ -v;$p a %$1s;$p b %$2s;o="|$a|\n";h=+${a// /-}+\\n v=${a// /$o}
    a=${b// /$h$v}${h//+/o};a=${a/+/o};${p% *} "${a/+/o}"
}

ladders 3 4
o---o
|   |
|   |
|   |
+---+
|   |
|   |
|   |
+---+
|   |
|   |
|   |
+---+
|   |
|   |
|   |
o---o

ladders 2 1
o--o
|  |
|  |
o--o

Answer 8

pb - 147 bytes

^t[B]>>[B]vw[T!0]{b[43]<[X]b[43]>w[B=0]{b[45]>}v[X-1]w[B=0]{b[124]^}v[X]t[T-1]}t[111]b[T]<w[X!0]{b[45]<}b[T]w[Y!0]{w[B!0]{^}b[124]^}b[T]^>>[B]vb[T]

This is the kind of challenge that, by rights, pb should be really good at. Drawing simple pictures with characters is exactly what pb was designed for. Alas, it's just a wordy language I guess.

Takes input length first, followed by size. Takes input in the form of byte values, for example: python -c 'print(chr(5) + chr(7))' | ./pbi.py ladder.pb

Look, a fun animation!

With comments:

^t[B]            # Save length to T
>>[B]v           # Go to X=size+1, Y=0

w[T!0]{          # While T is not 0:
    b[43]            # Write a '+'
    <[X]b[43]        # Write a '+' on the left side as well
    >w[B=0]{b[45]>}  # Travel back to the right '+', writing '-' on the way
    v[X-1]           # Go down by X-1 (== size)
    w[B=0]{b[124]^}  # Travel back up to the '+', writing '|' on the way
    v[X]             # Go down by X (== size + 1, location of next '+')
    t[T-1]           # Decerement T
}

t[111]           # Save 'o' to T (it's used 4 times so putting it
                 # in a variable saves bytes)

b[T]             # Write an 'o' (bottom right)

<w[X!0]{         # While not on X=0:
    b[45]<           # Travel left, writing '-' on the way
}

b[T]             # Write an 'o' (bottom left)

w[Y!0]{          # While not on Y=0:
    w[B!0]{^}        # Skip nonempty spaces
    b[124]           # Write a '|'
    ^                # Travel up
}

b[T]             # Write an 'o' (top left, replaces existing '+')

^>>[B]v          # Go back to where the size is saved and go to X=size+1, Y=0

b[T]             # Write an 'o' (top right, replaces existing '+')

Answer 9

Haskell, 100 97 bytes

l#s=unlines$t:m++[t]where _:m=[1..l]>>["+"!"-"]++("|"!" "<$u);t="o"!"-";o!i=o++(u>>i)++o;u=[1..s]

Usage example:

*Main> putStr $ 4 # 3
o---o
|   |
|   |
|   |
+---+
|   |
|   |
|   |
+---+
|   |
|   |
|   |
+---+
|   |
|   |
|   |
o---o

How it works:

l#s=unlines$t:m++[t]         -- concat top line, middle part and end line
                             -- with newlines between every line
  where                      -- where
  _:m=                       -- the middle part is all but the first line of
     [1..l]>>                -- l times
         ["+"!"-"]           --    a plus-dashes-plus line
         ++("|"!" "<$u)      --    followed by s times a bar-spaces-bar line

  t="o"!"-"                  -- very first and last line
  o!i=o++(u>>i)++o           -- helper to build a line
  u=[1..s]

Edit: @Christian Irwan found 3 bytes. Thanks!

Answer 10

PowerShell, 77 80

param($l,$s)$a='-'*$s
($c="o$a`o")
(($b=,"|$(' '*$s)|"*$s)+"+$a+")*--$l
$b
$c

Answer 11

brainfuck - 334 bytes

,[<+<<<<+>>>>>-]<[[>>]+[<<]>>-]<----[>---<----]--[>[+>>]<<[<<]>++++++]>[+.>>]-[<+>---]<+++++++>>--[<+>++++++]->---[<------->+]++++++++++[<++<]+++++[>[++++++>>]<<[<<]>-]>[-]>.-<<----[>>+++<<----]--[>+<--]>---<<<<++++++++++.,[>[>+>+<<-]>[<+>-]>[<<<<[>>>>>>[.>>]<<[<<]>>-]>>>>>[.>>]<<[<<]>-]<<<<+>-]>>>>[-]----[>---<----]>+.[>]<<<<<[.<<]

I expected this to be a lot shorter.

This sets up a "string" that looks like | (...) | and one that looks like +----(...)----+, printing each one as necessary, with some special casing for the os on the top and bottom.

Requires an interpreter that uses 8-bit cells and allows you to go left from cell 0 (be it into negative cells or looping). In my experience, these are the most common default settings.

With comments:

,[<+<<<<+>>>>>-]<[[>>]+[<<]>>-] Get m from input; make a copy
                      Turn it into m cells containing 1 with empty cells between

<----[>---<----]      Put 67 at the beginning (again with an empty cell between)

--[>[+>>]<<[<<]>++++++]  Add 43 to every nonempty cell

>[+.>>]               Add 1 to each cell and print it

-[<+>---]<+++++++    Put 92 after the last 45 (no empty cell!)

>>--[<+>++++++]      Put 43 immediately after the 92

->---[<------->+]    Put 234 after 43

++++++++++           And 10 after that

[<++<]             Add two to the 234; 92; the empty spaces; and left of the 111

+++++[>[++++++>>]<<[<<]>-] Add 30 to each 2; the 94; and the 236

>[-]>.-<<----[>>+++<<----] Erase leftmost 32; Print 111; subtract 68 from it

--[>+<--]>---        Put 124 where the 32 was

<<<<++++++++++.,     Print a newline; override the cell with n from input

[                    n times:

  >[>+>+<<-]>[<+>-]    Make a copy of m

  >[                   m times:

    <<<<                 Look for a flag at a specific cell

    [                    If it's there:

      >>>>>>[.>>]          Go to the 43; print it and every second cell after

      <<[<<]>>-            Clear the flag

    ]

    >>>>>[.>>]           Go to the 124; print it and every second cell after

    <<[<<]>              Go back to the copy of m

  -]

  <<<<+>               Plant the flag

-]

>>>>

[-]----[>---<----]>+ Erase the 124; add 68 to 43

.[>]                 Print it; then head to the end

<<<<<[.<<] Go to the last 45; print it; then print every second cell to the left

Answer 12

Perl, 98 bytes

($n,$m)=@ARGV;print$h="o"."-"x$m."o\n",((("|".(" "x$m)."|\n")x$m.$h)x$n)=~s{o(-+)o(?=\n.)}{+$1+}gr

Answer 13

Jolf, 36 bytes

Try it here!

ρpi,a+2J+2J"o-| "j"o(.+)o
o.+o'+$1+

Explanation

ρpi,a+2J+2J"o-| "j"o(.+)o\no.+o'+$1+
 pi              j                   repeat vertically j times
   ,a+2J+2J"o-| "                    a box with dimensions 2+J
ρ                 "o(.+)p\np.+o'     replace with regex
                                +$1+ with the -...-

Answer 14

C, 122 bytes

f(int m,int n,char*s){int i=0,w=3+m++;for(;i<w*m*n+w;++i)*s++=i%w>m?10:" |-+-o"[!(i/w%m)*2+!(i%w%m)+!(i/w%(m*n))*2];*s=0;}

Try it online.

Answer 15

Tcl, 187 bytes

lassign $argv n w
set c 0
while { $c < [expr {($w * $n) + ($n + 2)}]} {if {[expr {$c % ($n + 1)}] == 0} {puts "o[string repeat "-" $w ]o"} else {puts "|[string repeat " " $w ]|"}
incr c}

This code is made to put into a file with arguments input on the command line. provide number of boxes and width in that order.

Answer 16

PHP, 81bytes

Expects 2 arguments, passed when calling the PHP command directly. The first one is the size and the 2nd one is the number of steps.

$R=str_repeat;echo$P="o{$R('-',$W=$argv[1])}o
",$R("|{$R(' ',$W)}|
$P",$argv[2]);

May require some improvements.

Answer 17

Perl 5, 91 + 1 (-a) = 92 bytes

$_='|'.$"x$F[1].'|';push@a,y/| /+-/r,($_)x$F[1]while$F[0]--;$a[0]=y/| /o-/r;say for@a,$a[0]

Try it online!

Answer 18

Pip -l, 35 bytes

(^YsXbRLaJW'-)XbWR^('|XbRLaJ'+)WR'o

Try it online!

Explanation

(^YsXbRLaJW'-)XbWR^('|XbRLaJ'+)WR'o
                                     a is length, b is size, s is space (implicit)
   sXb                               String containing b spaces
      RLa                            List containing a copies of that string
         JW'-                        Join on "-" and wrap the result in "-" as well
  Y                                  Necessary for operator precedence reasons
 ^                                   Split into a list of characters
(            )Xb                     String-repeat each character in the list b times
                                     This list represents the central columns of the ladder

                    '|Xb             String containing b pipe characters
                        RLa          List containing a copies of that string
                           J'+       Join on "+"
                   (          )WR'o  Wrap in "o"
                  ^                  Split into a list of characters
                                     This list represents the outer columns of the ladder

                WR                   Wrap the left list in the right list, vectorizing

Some other versions

I tried a lot of different approaches trying to catch Pyth...

[Y'-XbWR'o;@>(sXbWR'|RLbPE'-XbWR'+RL:a)y]  41
Y^(t**b.1*:t**bX--a.1)" --"@yXbWR"|o+"@y   40
Y'|XbRLaJ'+YyWR'o;Z:sXbRLaJW'-RLbPEyAEy    39
t**:b(" |-o-+"<>2)@_@^t.1M$*Y[ttXa-1].1    39
J*Z:sXbRLaJW'-RLbWR:^('|XbRLaJ'+)WR'o      37
Y^$*Y[t**:btXa-1].1" --"@yXbWR"|o+"@y      37

I'm particularly fond of the t**b ones, which use math to generate the ladder's vertical pattern:

        b           Size; e.g. 3
    t               Preset variable for 10
     **:            Set t to t**b (e.g. 1000)
           a        Length; e.g. 3
            -1      2
         tX         String-repeat (the new value of) t 2 times: 10001000
   [          ]     Put t and the above into a list: [1000; 10001000]
               .1   Append 1 to both of them: [10001; 100010001]
$*(              )  Fold on multiplication: 1000200020001

The 1000200020001 can then be used to generate the patterns o|||+|||+|||o and - - - -, which make up the ladder. Unfortunately, I couldn't get this approach to be shorter than the join/wrap approach.

Answer 19

Python 2, 94 bytes

def F(n,m):a,b,c,d='o|+-';r=[a+d*m+a]+([b+' '*m+b]*m+[c+d*m+c])*n;r[-1]=r[0];print'\n'.join(r)

'Ungolfed':

def F(n,m):
 # 'o---o'
 r = ['o'+'-'*m+'o']
 # ('|   |'*m+'+---+') n times
 r += (['|'+' '*m+'|']*m+['+'+'-'*m+'+'])*n
 # replace last +---+ with o---o
 r[-1] = r[0]
 print '\n'.join(r)