Nothing
preprocess<-function(ssr,left,right,mean)
{
#ssr=excess mass
nodlkm<-length(ssr)
ssralip<-matrix(0,nodlkm,1)
#label<-matrix(1,nodlkm,1)
# Muodostetaan vektori, jossa kunkin solmun korkeus
kork<-matrix(0,nodlkm,1)
kork[1]<-1 #juuren korkeus on 1
i<-1
while (i<=nodlkm){
if (right[i]>0){ #jos ei olla lehdessa
kork[left[i]]<-kork[i]+1 #vasen lapsi yhta korkeammalla
kork[right[i]]<-kork[i]+1 #oikea lapsi yhta korkeammalla
}
i<-i+1
}
tasolkm<-max(kork) #tasojen lkm
k<-tasolkm #aloitetaan korkeimmalta tasolta
while (k>0){
i<-1
while (i<=nodlkm){ #nodlkm
if (kork[i]==k){
if (right[i]==0){ #jos ollaan lehdessa
ssralip[i]<-ssr[i] #alipuun ssr=solmun itsensa ssr
}
else if ((left[left[i]]==0) && (left[right[i]]==0)){
minnu<-min(ssralip[left[i]],ssralip[right[i]])
minnu<-min(minnu,ssr[i])
if (ssralip[left[i]]==minnu){ #remove right
ssralip[i]<-ssralip[left[i]]
mean[right[i]]<-0
left[right[i]]<-0
right[right[i]]<-0
}
else
if (ssralip[right[i]]==minnu){ #remove left
ssralip[i]<-ssralip[right[i]]
mean[left[i]]<-0
left[left[i]]<-0
right[left[i]]<-0
}
else{
left[i]<-0
right[i]<-0
ssralip[i]<-ssr[i]
}
}
else{
minnu<-min(ssralip[left[i]],ssralip[right[i]])
minnu<-min(minnu,ssralip[left[i]]+ssralip[right[i]])
minnu<-min(minnu,ssr[i])
if (minnu==ssralip[left[i]]+ssralip[right[i]]){
ssralip[i]<-ssralip[left[i]]+ssralip[right[i]]
}
else
if (ssralip[left[i]]==minnu){ #remove right
ssralip[i]<-ssralip[left[i]]
mean[right[i]]<-0
left[right[i]]<-0
right[right[i]]<-0
}
else
if (ssralip[right[i]]==minnu){ #remove left
ssralip[i]<-ssralip[right[i]]
mean[left[i]]<-0
left[left[i]]<-0
right[left[i]]<-0
}
else{
left[i]<-0
right[i]<-0
ssralip[i]<-ssr[i]
}
#
}
}
i<-i+1
}
k<-k-1
}
return(list(right=right,left=left,S=ssralip,mean=mean))
}
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