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    <h1>Golfscript - 136 Chars (Fits in a Tweet)</h1> <p>Be sure not to have a newline after the % for the input<br> eg<br> <code>$ echo -n 3 71%|./golfscript.rb hourglass.gs</code></p> <p>You can animate the hourglass like this: </p> <p><code>$ for((c=100;c&gt;=0;c--));do echo -n "15 $c%"|./golfscript.rb hourglass.gs;echo;sleep 0.1;done;</code></p> <p><strong>Golfscript - 136 Chars</strong><br> Make sure you don't save it with an extra newline on the end or it will print an extra number</p> <pre><code>);' ': /(~: ;0=~100.@- .**\/:t;'_':&amp;&amp; *.n ,{:y *.'\\'+{[&amp;'x':x]0t(:t&gt;=}:S~ (y-,{;S\+S+.}%;'/'++\+}%.{&amp;/ *}%\-1%{-1%x/ *&amp;/x*}%) /&amp;[*]++n* </code></pre> <p><strong>Golfscript - 144 Chars</strong></p> <pre> );' ':|/(~:^.*:X ;0=~100.@-X*\/ X'x':x*'_':& @*+:s;&&&+ ^*n^,{:y |*.[92 ]+{s [) \# :s;] }:S~^( y-,{;S\+ S+.}%;'/'+ +\+}%.{&/|*} %\-1%{-1%x/|*& /x*}%)|/&[*]++n* </pre> <p><strong>How it works</strong><br> First do the top line of underscores which is <code>2n+1</code> Create the top half of the hourglass, but use '_' chars instead of spaces, so for the 3 71% we would have.</p> <pre><code>\x__xx/ \xxx/ \x/ </code></pre> <p>Complete the top half by replacing the "_" with " " but save a copy to generate the bottom half</p> <p>The bottom half is created by reversing the whole thing</p> <pre><code> /x\ /xxx\ /xx__x\ </code></pre> <p>Replacing all the 'x' with ' ' and then then '_' with 'x'</p> <pre><code> / \ / \ / xx \ </code></pre> <p>Finally replace the ' ' in the bottom row with '_'</p> <pre><code> / \ / \ /__xx_\ </code></pre> <p>Roundabout but for me, the code turned out shorter than trying to generate both halves at once</p>
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    1. POCode Golf: Hourglass
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    1. COI always laugh when I see golfscript in one of these.
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    2. CO@Sid: How come? Use the right tool for the job!
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    3. COI like the way it is self documenting
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