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Sorting algorithms/Strand sort: Difference between revisions

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Sorting algorithms/Strand sort (view source)

Revision as of 00:07, 16 May 2021

7,330 bytes added ,  3 years ago
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→‎{{header|Phix}}: added syntax colouring the hard way
(Added 11l)
m (→‎{{header|Phix}}: added syntax colouring the hard way)
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=={{header|Phix}}==
<!--<lang Phix>(phixonline)-->
Copy of [[Sorting_algorithms/Strand_sort#Euphoria|Euphoria]]
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<lang Phix>function merge(sequence left, sequence right)
sequence result = {}
while length(left)>0 and length(right)>0 do
if left[$]<=right[1] then
exit
elsif right[$]<=left[1] then
return result & right & left
elsif left[1]<right[1] then
result = append(result,left[1])
left = left[2..$]
else
result = append(result,right[1])
right = right[2..$]
end if
end while
return result & left & right
end function
<span style="color: #008080;">function</span> <span style="color: #000000;">merge</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">left</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">right</span><span style="color: #0000FF;">)</span>
function strand_sort(sequence s)
<span style="color: #004080;">sequence</span> <span style="color: #000000;">result</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span>
integer j
<span style="color: #008080;">while</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">left</span><span style="color: #0000FF;">)></span><span style="color: #000000;">0</span>
sequence result = {}
<span style="color: #008080;">and</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">right</span><span style="color: #0000FF;">)></span><span style="color: #000000;">0</span> <span style="color: #008080;">do</span>
while length(s)>0 do
<span style="color: #008080;">if</span> <span style="color: #000000;">left</span><span style="color: #0000FF;">[$]<=</span><span style="color: #000000;">right</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span>
j = length(s)
<span style="color: #008080;">exit</span>
for i=1 to length(s)-1 do
<span style="color: #008080;">elsif</span> <span style="color: #000000;">right</span><span style="color: #0000FF;">[$]<=</span><span style="color: #000000;">left</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span>
if s[i]>s[i+1] then
<span style="color: #008080;">return</span> <span style="color: #000000;">result</span> <span style="color: #0000FF;">&</span> <span style="color: #000000;">right</span> <span style="color: #0000FF;">&</span> <span style="color: #000000;">left</span>
j = i
<span style="color: #008080;">elsif</span> <span style="color: #000000;">left</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]<</span><span style="color: #000000;">right</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span>
exit
<span style="color: #000000;">result</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">result</span><span style="color: #0000FF;">,</span><span style="color: #000000;">left</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">])</span>
end if
<span style="color: #000000;">left</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">left</span><span style="color: #0000FF;">[</span><span style="color: #000000;">2</span><span style="color: #0000FF;">..$]</span>
end for
<span style="color: #008080;">else</span>
result = merge(result,s[1..j])
<span style="color: #000000;">result</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">result</span><span style="color: #0000FF;">,</span><span style="color: #000000;">right</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">])</span>
s = s[j+1..$]
<span style="color: #000000;">right</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">right</span><span style="color: #0000FF;">[</span><span style="color: #000000;">2</span><span style="color: #0000FF;">..$]</span>
end while
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
return result
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
end function</lang>
<span style="color: #008080;">return</span> <span style="color: #000000;">result</span> <span style="color: #0000FF;">&</span> <span style="color: #000000;">left</span> <span style="color: #0000FF;">&</span> <span style="color: #000000;">right</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">strand_sort</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">result</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span>
<span style="color: #008080;">while</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: #000000;">0</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">j</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;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</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: #000000;">1</span> <span style="color: #008080;">do</span>
<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: #000000;">j</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">i</span>
<span style="color: #008080;">exit</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #000000;">result</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">merge</span><span style="color: #0000FF;">(</span><span style="color: #000000;">result</span><span style="color: #0000FF;">,</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..</span><span style="color: #000000;">j</span><span style="color: #0000FF;">])</span>
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">j</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..$]</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">result</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">strand_sort</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">shuffle</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">tagset</span><span style="color: #0000FF;">(</span><span style="color: #000000;">10</span><span style="color: #0000FF;">)))</span>
<!--</lang>-->
{{out}}
<pre>
{1,2,3,4,5,6,7,8,9,10}
</pre>
 
=={{header|PHP}}==
Petelomax
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