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Permutation test: Difference between revisions
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=={{header|REXX}}==
This REXX program is modeled after the '''C''' version, with some generalizations and optimization added.
<lang rexx>/*REXX program
/* ↑ ↑ */
/* │ │ */
/* │ └─────control population. */
/* └────────treatment population. */
n=9
data=85 88 75 66 25 29 83 39 97 68 41 10 49 16 65 32 92 28 98
w=words(data); m=w-n
say 'volunteer population given treatment:' right(n,length(w))
say ' control population given a placebo:' right(m,length(w))
say
say 'treatment population efficacy % (percentages):' subword(data,1,n)
say ' control population placebo % (percentages):' subword(data,n+1)
say
do v= 0 for w ; #.v=word(data,v+1) ; end
treat=0; do i= 0 to n-1 ; treat=treat+#.i ; end
do k=
gt=picker(n+m, n, 0)
le=
say "<= "
say " > "
exit /*stick a fork in it, we're all done. */
/*────────────────────────────────────────────────────────────────────────────*/
picker: procedure expose #. treat; parse arg it,rest,eff
if rest==0 then return eff>treat
if it>rest then q=picker(it-1, rest, eff)
else q=0
itP=it-1
return picker(itP, rest-1, eff+#.itP) + q</lang>
<pre>
volunteer population given treatment: 9
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