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Sort using a custom comparator: Difference between revisions

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Sort using a custom comparator (view source)

Revision as of 14:40, 25 March 2021

2,590 bytes added ,  3 years ago
m
→‎{{header|Phix}}: added syntax colouring the hard way, phix/basics
m (→‎{{header|Raku}}: simplified)
m (→‎{{header|Phix}}: added syntax colouring the hard way, phix/basics)
Line 2,883:
 
=={{header|Phix}}==
{{libheader|Phix/basics}}
<lang Phix>function my_compare(sequence a, b)
<!--<lang Phix>-->
integer c = -compare(length(a),length(b)) -- descending length
<span style="color: #008080;">function</span> <span style="color: #000000;">my_compare</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
if c=0 then
<span style="color: #004080;">integer</span> <span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #7060A8;">compare</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">))</span> <span style="color: #000080;font-style:italic;">-- descending length</span>
c = compare(lower(a),lower(b)) -- ascending lexical within == length
<span style="color: #008080;">if</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
end if
<span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">compare</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">lower</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span><span style="color: #7060A8;">lower</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">))</span> <span style="color: #000080;font-style:italic;">-- ascending lexical within same length</span>
return c
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end function
<span style="color: #008080;">return</span> <span style="color: #000000;">c</span>
?custom_sort(routine_id("my_compare"),{"Here", "are", "some", "sample", "strings", "to", "be", "sorted"})</lang>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #0000FF;">?</span><span style="color: #7060A8;">custom_sort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">my_compare</span><span style="color: #0000FF;">,{</span><span style="color: #008000;">"Here"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"are"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"some"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"sample"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"strings"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"to"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"be"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"sorted"</span><span style="color: #0000FF;">})</span>
<!--</lang>-->
{{out}}
<pre>
Petelomax
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