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Ingy döt Net 2024-11-04 20:28:54 -08:00
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commit 157b70a810
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Task/Sort-using-a-custom-comparator/Phix/sort-using-a-custom-comparator.phix
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@ -1,10 +1,11 @@
-->
<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>
<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>
<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>
<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>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">c</span>
<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>
<!--
with javascript_semantics
function my_compare(sequence a, b)
integer c = -compare(length(a),length(b)) -- descending length
if c=0 then
c = compare(lower(a),lower(b)) -- ascending lexical within same length
end if
return c
-- return compare({length(b),lower(a)},{length(a),lower(b)}) -- single-line equivalent
end function
?custom_sort(my_compare,{"Here", "are", "some", "sample", "strings", "to", "be", "sorted"})
--?custom_sort(my_compare,split("Here are some sample strings to be sorted")) -- equivalent