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Sorting algorithms/Permutation sort: Difference between revisions

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Sorting algorithms/Permutation sort (view source)

Revision as of 20:29, 15 May 2021

3,985 bytes added ,  3 years ago
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→‎{{header|Phix}}: added syntax colouring the hard way
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=={{header|Phix}}==
<!--<lang Phix>function inOrder(sequence sphixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
for i=2 to length(s) do
if s[i]<s[i-1] then return 0 end if
<span style="color: #008080;">function</span> <span style="color: #000000;">inOrder</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
return 1
<span style="color: #008080;">if</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]<</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span> <span style="color: #008080;">return</span> <span style="color: #004600;">false</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
 
<span style="color: #008080;">return</span> <span style="color: #004600;">true</span>
function permutationSort(sequence s)
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
for n=1 to factorial(length(s)) do
sequence perm = permute(n,s)
<span style="color: #008080;">function</span> <span style="color: #000000;">permutationSort</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
if inOrder(perm) then return perm end if
<span style="color: #008080;">for</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">factorial</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">))</span> <span style="color: #008080;">do</span>
end for
<span style="color: #004080;">sequence</span> <span style="color: #000000;">perm</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">permute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">,</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
?9/0 -- should never happen
<span style="color: #008080;">if</span> <span style="color: #000000;">inOrder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">perm</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #008080;">return</span> <span style="color: #000000;">perm</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
 
<span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span> <span style="color: #000080;font-style:italic;">-- should never happen</span>
?permutationSort({"dog",0,15.545,{"cat","pile","abcde",1},"cat"})</lang>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">permutationSort</span><span style="color: #0000FF;">({</span><span style="color: #008000;">"dog"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">15.545</span><span style="color: #0000FF;">,{</span><span style="color: #008000;">"cat"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"pile"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"abcde"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">},</span><span style="color: #008000;">"cat"</span><span style="color: #0000FF;">})</span>
<!--</lang>-->
{{out}}
<pre>
Petelomax
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