#
# Iterative insert
#
sub insert {
	my($tree, $value, $children) = @_;
	my $branch = $tree;
	do{	
		unless($branch){
				$branch = {};
				for my $index (0 .. $children-1) { #build node
					$branch->{$index} = undef;
				}
				$branch->{VALUE} = $value;
				$_[0] = $tree;
				return;
			}	
	}while($branch = $branch->{$value % $children});
}