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Next highest int from digits: Difference between revisions

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Next highest int from digits (view source)

Revision as of 13:25, 9 May 2021

11,373 bytes added ,  3 years ago
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→‎{{header|Phix}}: added syntax colouring the hard way
(Added Delphi example)
m (→‎{{header|Phix}}: added syntax colouring the hard way)
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=={{header|Phix}}==
===algorithm 1===
<!--<lang Phix>function nigh(string nphixonline)-->
<span style="color: #008080;">function</span> <span style="color: #000000;">nigh</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">)</span>
sequence p = repeat("",factorial(length(n)))
<span style="color: #004080;">sequence</span> <span style="color: #000000;">p</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">""</span><span style="color: #0000FF;">,</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;">n</span><span style="color: #0000FF;">)))</span>
for i=1 to length(p) do
<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;">p</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
p[i] = permute(i,n)
<span style="color: #000000;">p</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">permute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">,</span><span style="color: #000000;">n</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
p = sort(p)
<span style="color: #000000;">p</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;">)</span>
integer k = rfind(n,p)
<span style="color: #004080;">integer</span> <span style="color: #000000;">k</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">rfind</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">,</span><span style="color: #000000;">p</span><span style="color: #0000FF;">)</span>
return iff(k=length(p)?"0",p[k+1])
<span style="color: #008080;">return</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">k</span><span style="color: #0000FF;">=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;">)?</span><span style="color: #008000;">"0"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">p</span><span style="color: #0000FF;">[</span><span style="color: #000000;">k</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">])</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
▼
constant tests = {"0","9","12","21","12453",
<span style="color: #008080;">constant</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"0"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"9"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"12"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"21"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"12453"</span><span style="color: #0000FF;">,</span>
"738440","45072010","95322020"}
<span style="color: #008000;">"738440"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"45072010"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"95322020"</span><span style="color: #0000FF;">}</span>
<span style="color: #000080;font-style:italic;">-- (crashes on) "9589776899767587796600"}</span>
atom t0 = time()
<span style="color: #004080;">atom</span> <span style="color: #000000;">t0</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()</span>
for i=1 to length(tests) do
<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;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
string t = tests[i]
<span style="color: #004080;">string</span> <span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span>
printf(1,"%22s => %s\n",{t,nigh(t)})
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%22s =&gt; %s\n"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nigh</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)})</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
?elapsed(time()-t0)</lang>
<span style="color: #0000FF;">?</span><span style="color: #7060A8;">elapsed</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">time</span><span style="color: #0000FF;">()-</span><span style="color: #000000;">t0</span><span style="color: #0000FF;">)</span>
<!--</lang>-->
{{out}}
<pre>
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</pre>
===algorithm 2===
<!--<lang Phix>function nigh(string nphixonline)-->
<span style="color: #008080;">function</span> <span style="color: #000000;">nigh</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">)</span>
integer hi = n[$]
<span style="color: #004080;">integer</span> <span style="color: #000000;">hi</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">[$]</span>
for i=length(n)-1 to 1 by -1 do
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</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: #000000;">1</span> <span style="color: #008080;">by</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
integer ni = n[i]
<span style="color: #004080;">integer</span> <span style="color: #000000;">ni</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span>
if ni<hi then
<span style="color: #008080;">if</span> <span style="color: #000000;">ni</span><span style="color: #0000FF;"><</span><span style="color: #000000;">hi</span> <span style="color: #008080;">then</span>
string sr = sort(n[i..$])
<span style="color: #004080;">string</span> <span style="color: #000000;">sr</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">..$])</span>
integer k = rfind(ni,sr)+1
<span style="color: #004080;">integer</span> <span style="color: #000000;">k</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">rfind</span><span style="color: #0000FF;">(</span><span style="color: #000000;">ni</span><span style="color: #0000FF;">,</span><span style="color: #000000;">sr</span><span style="color: #0000FF;">)+</span><span style="color: #000000;">1</span>
n[i] = sr[k]
<span style="color: #000000;">n</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">k</span><span style="color: #0000FF;">]</span>
sr[k..k] = ""
<span style="color: #000000;">sr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">k</span><span style="color: #0000FF;">..</span><span style="color: #000000;">k</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">""</span>
n[i+1..$] = sr
<span style="color: #000000;">n</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..$]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sr</span>
return n
<span style="color: #008080;">return</span> <span style="color: #000000;">n</span>
end if
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
hi = max(hi,ni)
<span style="color: #000000;">hi</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">max</span><span style="color: #0000FF;">(</span><span style="color: #000000;">hi</span><span style="color: #0000FF;">,</span><span style="color: #000000;">ni</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
return "0"
<span style="color: #008080;">return</span> <span style="color: #008000;">"0"</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
 
▲
constant tests = {"0","9","12","21","12453",
<span style="color: #008080;">constant</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"0"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"9"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"12"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"21"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"12453"</span><span style="color: #0000FF;">,</span>
"738440","45072010","95322020",
<span style="color: #008000;">"738440"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"45072010"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"95322020"</span><span style="color: #0000FF;">,</span>
"9589776899767587796600"}
<span style="color: #008000;">"9589776899767587796600"</span><span style="color: #0000FF;">}</span>
atom t0 = time()
<span style="color: #004080;">atom</span> <span style="color: #000000;">t0</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()</span>
for i=1 to length(tests) do
<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;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
string t = tests[i]
<span style="color: #004080;">string</span> <span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span>
printf(1,"%22s => %s\n",{t,nigh(t)})
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%22s =&gt; %s\n"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nigh</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)})</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
?elapsed(time()-t0)</lang>
<span style="color: #0000FF;">?</span><span style="color: #7060A8;">elapsed</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">time</span><span style="color: #0000FF;">()-</span><span style="color: #000000;">t0</span><span style="color: #0000FF;">)</span>
<!--</lang>-->
{{out}}
<pre>
Petelomax
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