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Singly-linked list/Traversal (view source)

Revision as of 17:29, 7 April 2022

4,200 bytes added ,  2 years ago
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→‎{{header|Phix}}: syntax coloured, made p2js compatible
m (→‎{{header|Phix}}: syntax coloured, made p2js compatible)
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=={{header|Phix}}==
See also [[Singly-linked_list/Element_removal#Phix|Removal]].
<!--<lang Phix>enum NEXT,DATA(phixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
constant empty_sll = {{1}}
<span style="color: #008080;">enum</span> <span style="color: #000000;">NEXT</span><span style="color: #0000FF;">,</span><span style="color: #000000;">DATA</span>
sequence sll = empty_sll
<span style="color: #008080;">constant</span> <span style="color: #000000;">empty_sll</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{{</span><span style="color: #000000;">1</span><span style="color: #0000FF;">}}</span>
 
<span style="color: #004080;">sequence</span> <span style="color: #000000;">sll</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">deep_copy</span><span style="color: #0000FF;">(</span><span style="color: #000000;">empty_sll</span><span style="color: #0000FF;">)</span>
procedure insert_after(object data, integer pos=length(sll))
sll = append(sll,{sll[pos][NEXT],data})
<span style="color: #008080;">procedure</span> <span style="color: #000000;">insert_after</span><span style="color: #0000FF;">(</span><span style="color: #004080;">object</span> <span style="color: #000000;">data</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">pos</span><span style="color: #0000FF;">=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sll</span><span style="color: #0000FF;">))</span>
sll[pos][NEXT] = length(sll)
<span style="color: #000000;">sll</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sll</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">sll</span><span style="color: #0000FF;">[</span><span style="color: #000000;">pos</span><span style="color: #0000FF;">][</span><span style="color: #000000;">NEXT</span><span style="color: #0000FF;">],</span><span style="color: #000000;">data</span><span style="color: #0000FF;">})</span>
end procedure
<span style="color: #000000;">sll</span><span style="color: #0000FF;">[</span><span style="color: #000000;">pos</span><span style="color: #0000FF;">][</span><span style="color: #000000;">NEXT</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sll</span><span style="color: #0000FF;">)</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
insert_after("ONE")
insert_after("TWO")
<span style="color: #000000;">insert_after</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"ONE"</span><span style="color: #0000FF;">)</span>
insert_after("THREE")
<span style="color: #000000;">insert_after</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"TWO"</span><span style="color: #0000FF;">)</span>
 
<span style="color: #000000;">insert_after</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"THREE"</span><span style="color: #0000FF;">)</span>
?sll
 
<span style="color: #0000FF;">?</span><span style="color: #000000;">sll</span>
procedure show()
integer idx = sll[1][NEXT]
<span style="color: #008080;">procedure</span> <span style="color: #000000;">show</span><span style="color: #0000FF;">()</span>
while idx!=1 do
<span style="color: #004080;">integer</span> <span style="color: #000000;">idx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sll</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">][</span><span style="color: #000000;">NEXT</span><span style="color: #0000FF;">]</span>
?sll[idx][DATA]
<span style="color: #008080;">while</span> <span style="color: #000000;">idx</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
idx = sll[idx][NEXT]
<span style="color: #0000FF;">?</span><span style="color: #000000;">sll</span><span style="color: #0000FF;">[</span><span style="color: #000000;">idx</span><span style="color: #0000FF;">][</span><span style="color: #000000;">DATA</span><span style="color: #0000FF;">]</span>
end while
<span style="color: #000000;">idx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sll</span><span style="color: #0000FF;">[</span><span style="color: #000000;">idx</span><span style="color: #0000FF;">][</span><span style="color: #000000;">NEXT</span><span style="color: #0000FF;">]</span>
end procedure
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
show()</lang>▼
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
<span style="color: #000000;">show</span><span style="color: #0000FF;">()</span>
▲show()<!--</lang>-->
{{out}}
<pre>
Petelomax
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