Nothing
tree.K=function(k,k1,k2){
nG=length(k)
nK=length(k1)
K=matrix(0,nG,nK)
K[,1]=k
for( i in 2:nK){
k0=K[,i-1]
k0[k0==k2[i-1]]=k1[i-1]
K[,i]=k0
}
return(K)
}
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