Rosetta Code

Aliquot sequence classifications: Difference between revisions

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Aliquot sequence classifications (view source)

Revision as of 14:21, 12 March 2024

1,154 bytes removed ,  2 months ago
→‎{{header|REXX}}: make it ooRexx compatible and readable
(Add C# implementation)
(→‎{{header|REXX}}: make it ooRexx compatible and readable)
Line 5,006:
 
Both of the above limitations are imposed by this Rosetta Code task's restriction requirements:   ''For the purposes of this task, ···''.
<syntaxhighlight lang="rexx">/*REXX program classifies various positive integers for For types of aliquot sequences. */
parseParse argArg low high $L LL /*obtain optional arguments from the CL*/
high= word(high low 10,1); low= word(low 1,1) /*obtain the LOW and HIGH (range). */
low=word(low 1,1) /*obtain the LOW and HIGH (range). */
if $L='' then $L=11 12 28 496 220 1184 12496 1264460 790 909 562 1064 1488 15355717786080
If LL='' Then
numeric digits 100 /*be able to compute the number: BIG */
LL=11 12 28 496 220 1184 12496 1264460 790 909 562 1064 1488 15355717786080
big= 2**47; NTlimit= 16 + 1 /*limits for a non─terminating sequence*/
numericNumeric Digits 20 digits max(9, length(big) ) /*be able toTo handlecompute bigthe numbersnumber: for //BIG */
big=2**47
digs= digits() /*used for align numbers for the output*/
#.NTlimit=16+1 .; #.0= 0; #.1= 0 /*#. are the proper divisorlimit sums.for a non-terminating sequence */
Numeric Digits max(9,length(big)) /*be able To handle big numbers For // */
say center('numbers from ' low " ───► " high ' (inclusive)', 153, "═")
digs=digits() do n=low to high; call classify n /*callused For aalign subroutinenumbers toFor classifythe number.output*/
dsum.=.
end /*n*/ /* [↑] process a range of integers. */
dsum.0=0
say
dsum.1=0 /* dsum. are the proper divisor sums. */
say center('first numbers for each classification', 153, "═")
Say 'Numbers from ' low ' ---> ' high ' (inclusive):'
class.= 0 /* [↓] ensure one number of each class*/
Do n=low To high do q=1 until class.sociable\==0 /*the onlyprocess specified range one that has to be counted. */
Call classify n call classify -q /*minus (-)call signsubroutine indicatesTo don'tclassify tellnumber. */
End
_= what; upper _ /*obtain the class and uppercase it. */
Say
class._= class._ + 1 /*bump counter for this class sequence.*/
Say 'First numbers for each classification:'
if class._==1 then say right(q, digs)':' center(what, digs) $
class.=0 end /*q*/ /* [↑?] onlyensure one displaynumber theof 1steach occurrenceclass*/
say Do q=1 Until class.sociable\==0 /*the only [↑]one that processhas untilTo allbe classescounted. found*/
Call classify -q /*minus (-) sign indicates don't tell. */
say center('classifications for specific numbers', 153, "═")
_=translate(what) do i=1 for words($L) /*$L:obtain the isclass aand listuppercase ofit. "special numbers".*/
class._=class._+1 call classify word($L, i) /*callbump acounter subroutineFor tothis classifyclass numbersequence.*/
If class._==1 Then end /*i*/ /*first number of this class /* [↑] process a list of integers. */
Call out q,what,dd
exit /*stick a fork in it, we're all done. */
End
/*──────────────────────────────────────────────────────────────────────────────────────*/
classify:Say parse arg a 1 aa; a= abs(a) /*obtain number[?] process that'sUntil toall beclasses classifiedfound*/
Say 'Classifications for specific numbers:'
if #.a\==. then s= #.a /*Was this number been summed before?*/
Do i=1 To words(LL) else s= sigma(a) /*No, thenprocess a classifylist numberof the"special hardnumbers" way*/
Call classify #.a= s word(LL,i) /*define sum ofcall thesubroutine To properclassify divisorsnumber. */
End
$= s /*define the start of integer sequence.*/
Exit what= 'terminating' /*assumestick thisa kindfork ofin classificationit,we're all done. */
out:
c.= 0 /*clear all cyclic sequences (to zero).*/
Parse arg number,class,dd
c.s= 1 /*set the first cyclic sequence. */
dd.=''
if $==a then what= 'perfect' /*check for a "perfect" number. */
Do di=1 By 1 While length(dd)>50
else do t=1 while s>0 /*loop until sum isn't 0 or > big.*/
do dj=50 To 10 By -1
m= s /*obtain the last number in sequence. */
If substr(dd,dj,1)=' ' Then Leave
if #.m==. then s= sigma(m) /*Not defined? Then sum proper divisors*/
End
else s= #.m /*use the previously found integer. */
dd.di=left(dd,dj)
if m==s then if m>=0 then do; what= 'aspiring'; leave; end
dd=substr(dd,dj+1)
parse var $ . word2 . /*obtain the 2nd number in sequence. */
End
if word2==a then do; what= 'amicable'; leave; end
dd.di=dd
$= $ s /*append a sum to the integer sequence.*/
Say right(number,digs)':' center(class,digs) dd.1||conti(1)
if s==a then if t>3 then do; what= 'sociable'; leave; end
Do di=2 By 1 While dd.di>''
if c.s then if m>0 then do; what= 'cyclic' ; leave; end
Say copies(' ',33)dd.di||conti(di)
c.s= 1 /*assign another possible cyclic number*/
End
/* [↓] Rosetta Code task's limit: >16 */
Return
if t>NTlimit then do; what= 'non─terminating'; leave; end
conti:
if s>big then do; what= 'NON─TERMINATING'; leave; end
Parse arg this
end /*t*/ /* [↑] only permit within reason. */
next=this+1
if aa>0 then say right(a, digs)':' center(what, digs) $
If dd.next>'' Then Return '...'
return /* [↑] only display if AA is positive*/
Else Return ''
/*──────────────────────────────────────────────────────────────────────────────────────*/
/*---------------------------------------------------------------------------------*/
sigma: procedure expose #. !.; parse arg x; if 11<2 then return 0; odd= x // 2
classify:
s= 1 /* [↓] use EVEN or ODD integers. ___*/
Parse Arg a 1 aa
do j=2+odd by 1+odd while j*j<x /*divide by all the integers up to √ X */
a=abs(a) if x//j==0 then s= s + j + x % j /*add the two divisors to the sum. /*obtain number that's to be classified*/
If dsum.a\==. Then
end /*j*/ /* [↓] adjust for square. ___*/
if j*js==xdsum.a then s= s + j /*Was X a square? /*Was Ifthis so,number addbeen √summed X before?*/
Else
#.x= s /*memoize division sum for argument X.*/
return s =dsum(a) /*returnNo,Then classify number the hard " " " " "way */</syntaxhighlight>
dsum.a=s /*define sum of the proper divisors. */
dd=s /*define the start of integer sequence.*/
what='terminating' /*assume this kind of classification. */
c.=0 /*clear all cyclic sequences (to zero).*/
c.s=1 /*set the first cyclic sequence. */
If dd==a Then
what='perfect' /*check For a "perfect" number. */
Else Do t=1 By 1 While s>0 /*loop Until sum isn't 0 or > big.*/
m=s /*obtain the last number in sequence. */
If dsum.m==. Then /*Not defined? */
s=dsum(m) /* compute sum pro of per divisors */
Else
s=dsum.m /*use the previously found integer. */
If m==s Then
If m>=0 Then Do
what='aspiring'
Leave
End
If word(dd,2)=a Then Do
what='amicable'
Leave
End
dd=dd s /*append a sum To the integer sequence.*/
If s==a Then
If t>3 Then Do
what='sociable'
Leave
End
If c.s Then
If m>0 Then Do
what='cyclic'
Leave
End
c.s=1 /*assign another possible cyclic number*/
/* [?] Rosetta Code task's limit: >16 */
If t>NTlimit Then Do
what='non-terminating'
Leave
End
If s>big Then Do
what='NON-TERMINATING'
Leave
End
End
If aa>0 Then /* display only if AA is positive */
Call out a,what,dd
Return
/*---------------------------------------------------------------------------------*/
dsum: Procedure Expose dsum. /* compute the sum of proper divisors */
Parse Arg x
If x<2 Then
Return 0
odd=x//2
s=1 /* use EVEN or ODD integers. */
Do j=2+odd by 1+odd While j*j<x /* divide by all the integers ) */
/* up to but excluding sqrt(x) */
If x//j==0 Then /* j is a divisor, so is x%j */
s=s+j+x%j /*add the two divisors To the sum. */
End
If j*j==x Then /* if x is a square */
s=s+j /* add sqrt(X) */
dsum.x=s /* memoize proper divisor sum of X */
Return s /* return the proper divisor sum */
</syntaxhighlight>
{{out|output|text=&nbsp; when using the default input:}}
<pre>Numbers from 1 ---> 10 (inclusive):
(Shown at three-quarter size.)
 
<pre style="font-size:75%">
═════════════════════════════════════════════════════════numbers from 1 ───► 10 (inclusive)══════════════════════════════════════════════════════════
1: terminating 0
2: terminating 1 0
Line 5,085 ⟶ 5,146:
10: terminating 8 7 1 0
 
First numbers for each classification:
══════════════════════════════════════════════════════════first numbers for each classification══════════════════════════════════════════════════════════
1: terminating 0
6: perfect 6
25: aspiring 6
138: non─terminatingnon-terminating 150 222 234 312 528 960 2088 3762 5598 6570 10746 13254 13830 19434 20886 21606 25098 26742 26754...
13254 13830 19434 20886 21606 25098 26742 26754
220: amicable 284 220
562: cyclic 284 220 284
12496: sociable 14288 15472 14536 14264 12496
 
Classifications for specific numbers:
══════════════════════════════════════════════════════════classifications for specific numbers═══════════════════════════════════════════════════════════
11: terminating 1 0
12: terminating 16 15 9 4 3 1 0
Line 5,107 ⟶ 5,169:
562: cyclic 284 220 284
1064: cyclic 1336 1184 1210 1184
1488: non─terminatingnon-terminating 2480 3472 4464 8432 9424 10416 21328 22320 55056 95728 96720 236592 459792 881392 882384 1474608 2461648 3172912 3173904...
95728 96720 236592 459792 881392 882384 1474608 ...
15355717786080: NON─TERMINATING 44534663601120 144940087464480
2461648 3172912 3173904
15355717786080: NON-TERMINATING 44534663601120 144940087464480
 
</pre>
 
Walterpachl
2,289

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