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2016 Update

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Tina Müller 2016-12-05 22:15:40 +01:00
parent 948b86eafa
commit dcf5d15da3
7965 changed files with 139854 additions and 31002 deletions
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36
Task/Ackermann-function/REXX/ackermann-function-2.rexx
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@ -1,21 +1,21 @@
/*REXX program calculates and displays some values for the Ackermann function.*/
/*REXX program calculates and displays some values for the Ackermann function. */
high=24
do j=0 to 3; say
do k=0 to high%(max(1,j))
call Ackermann_tell j,k
do j=0 to 3; say
do k=0 to high % (max(1, j))
call tell_Ack j, k
end /*k*/
end /*j*/
exit /*stick a fork in it, we're all done. */
/*──────────────────────────────────ACKERMANN_TELL subroutine─────────────────*/
ackermann_tell: parse arg mm,nn; calls=0 /*display an echo message.*/
#=right(nn,length(high))
say 'Ackermann('mm","#')='right(ackermann(mm,nn),high),
left('',12) 'calls='right(calls,high)
return
/*──────────────────────────────────ACKERMANN subroutine──────────────────────*/
ackermann: procedure expose calls /*compute value of Ackermann function.*/
parse arg m,n; calls=calls+1
if m==0 then return n+1
if n==0 then return ackermann(m-1,1)
if m==2 then return n*2+3
return ackermann(m-1,ackermann(m,n-1))
exit /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
tell_Ack: parse arg mm,nn; calls=0 /*display an echo message to terminal. */
#=right(nn,length(high))
say 'Ackermann('mm", "#')='right(ackermann(mm, nn), high),
left('', 12) 'calls='right(calls, high)
return
/*──────────────────────────────────────────────────────────────────────────────────────*/
ackermann: procedure expose calls /*compute value of Ackermann function. */
parse arg m,n; calls=calls+1
if m==0 then return n + 1
if n==0 then return ackermann(m-1, 1)
if m==2 then return n + 3 + n
return ackermann(m-1, ackermann(m, n-1) )