Largest int from concatenated ints: Difference between revisions
Largest int from concatenated ints (view source)
Revision as of 20:26, 27 January 2018
, 6 years ago→{{header|REXX}}: added Version 4
Walterpachl (talk | contribs) (→{{header|REXX}}: added another version) |
Walterpachl (talk | contribs) m (→{{header|REXX}}: added Version 4) |
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4 45 54 5 6.6e77 -> 660000000000000000000000000000000000000000000000000000000000000000000000000000554454
3 3 .2 -> ** invalid ** bad integer .2</pre>
===Version 4===
{{trans|NetRexx}}
<lang rexx>/*REXX program constructs the largest integer from an integer list using concatenation.*/
l.=''; l.1 = '1 34 3 98 9 76 45 4' /*the 1st integer list to be used. */
l.2 = '54 546 548 60' /* " 2nd " " " " " */
l.3 = ' 4 45 54 5' /* " 3rd " " " " " */
l.4 = ' 4 45 54 5 6.6e77' /* " 4th " " " " " */
l.5 = ' 3 3 .2' /* " 5th " " " " " */
l.6 = ' 4 45 54 5 6.6e1001' /* " 4th " " " " " */
l_length=0
Do li=1 By 1 While l.li<>''
l_length=max(l_length,length(space(l.li)))
End
Do li=1 By 1 While l.li<>''
z=''
Do j=1 To words(l.li)
int=integer(word(l.li,j))
If int='?' Then Do
Say left(space(l.li),l_length) '-> ** invalid ** bad integer' word(l.li,j)
Iterate li
End
Else
z=z int
End
/*Say copies(' ',l_length) ' ' soll.li */
Say left(space(l.li),l_length) '->' largeint(z)
End
Exit
integer: Procedure
Numeric Digits 1000
Parse Arg z
If Datatype(z,'W') Then
Return z+0
Else
Return '?'
largeint: Procedure
Parse Arg list
w.0=words(list)
Do i=1 To w.0
w.i=word(list,i)
End
Do wx=1 To w.0-1
Do wy=wx+1 To w.0
xx=w.wx
yy=w.wy
xy=xx||yy
yx=yy||xx
if xy < yx then do
/* swap xx and yy */
w.wx = yy
w.wy = xx
end
End
End
list=''
Do ww=1 To w.0
list=list w.ww
End
Return space(list,0)</lang>
{{out}}
<pre>1 34 3 98 9 76 45 4 -> 998764543431
54 546 548 60 -> 6054854654
4 45 54 5 -> 554454
4 45 54 5 6.6e77 -> 660000000000000000000000000000000000000000000000000000000000000000000000000000554454
3 3 .2 -> ** invalid ** bad integer .2
4 45 54 5 6.6e1001 -> ** invalid ** bad integer 6.6e1001</pre>
=={{header|Ring}}==
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