function?[node]?=?cut_by_r（XrcurrentNode）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?根據第r維對X進行切分獲得節點
%?X：數據點集
%?r：切分維度
%?node：結構體
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Node_template?=?struct（...
????‘isRoot‘0...??????是否是根節點，0不是，1是
????‘isLeaf‘0...??????是否是葉子節點
????‘isLeft‘0...??????是否是左孩子
????‘isRight‘0...?????是否是右孩子?用于搜索時找兄弟結點
????‘hasLeft‘0...?????是否有左孩子
????‘hasRight‘0...????是否有右孩子
????‘parent‘-1...?????父親結點，用于搜索時回溯
????‘val‘-1...????????切分點坐標
????‘left‘-1...???????左節點（依然是結構體）
????‘right‘-1...??????右節點
????‘leftSet‘-1...????分到右邊的點集（矩陣）-1表示空集
????‘rightSet‘-1...???分到左邊的點集（矩陣），-1表示空集?
????‘r‘-1...??????????切分維度）;
????‘visited‘0....?????搜索時是否訪問標志），0為未訪問，1為訪問過
????‘index‘-1?...??????下標
????）;??????????????????%節點結構體模板

dim?=?size（X1）-1;????%數據點的維度
num?=?size（X2）;????%數據集點數
node?=?currentNode;
node.r?=?r;
if?num?==?1
????%數據集中只有一個點
????node.val?=?X（1:dim1）;
????node.isLeaf?=?1;
????node.index?=?X（dim+1:）;
else
????X_sorted?=?sort_by_r（Xr）;
????mid?=?ceil（num/2）;
????node.val?=?X_sorted（1:dimmid）;
????node.index?=?X_sorted（dim+1mid）;
????if?mid>1
????????node.leftSet?=?X_sorted（:1:ceil（num/2）-1）;
????end
????if?mid????????node.rightSet?=?X_sorted（:ceil（num/2）+1:end）;
????end
end
r?=?mod（rdim）+1;
if?node.leftSet?~=?-1
????node.hasLeft?=?1;
????node.left?=?Node_template;
????node.left.parent?=?node;
????node.left.isLeft?=?1;
????node.left?=?cut_by_r（node.leftSetrnode.left）;
end
if?node.rightSet?~=?-1
????node.hasRight?=?1;
????node.right?=?Node_template;
????node.right.parent?=?node;
????node.right.isRight?=?1;
????node.right?=?cut_by_r（node.rightSetrnode.right）;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????????28??2018-08-08?14:35??kdTree\.git\COMMIT_EDITMSG

?????文件????????298??2018-08-06?21:28??kdTree\.git\config

?????文件?????????73??2018-08-06?21:28??kdTree\.git\description

?????文件?????????23??2018-08-06?21:28??kdTree\.git\HEAD

?????文件????????478??2018-08-06?21:28??kdTree\.git\hooks\applypatch-msg.sample

?????文件????????896??2018-08-06?21:28??kdTree\.git\hooks\commit-msg.sample

?????文件???????3327??2018-08-06?21:28??kdTree\.git\hooks\fsmonitor-watchman.sample

?????文件????????189??2018-08-06?21:28??kdTree\.git\hooks\post-update.sample

?????文件????????424??2018-08-06?21:28??kdTree\.git\hooks\pre-applypatch.sample

?????文件???????1642??2018-08-06?21:28??kdTree\.git\hooks\pre-commit.sample

?????文件???????1348??2018-08-06?21:28??kdTree\.git\hooks\pre-push.sample

?????文件???????4898??2018-08-06?21:28??kdTree\.git\hooks\pre-rebase.sample

?????文件????????544??2018-08-06?21:28??kdTree\.git\hooks\pre-receive.sample

?????文件???????1492??2018-08-06?21:28??kdTree\.git\hooks\prepare-commit-msg.sample

?????文件???????3610??2018-08-06?21:28??kdTree\.git\hooks\update.sample

?????文件????????689??2018-08-08?14:35??kdTree\.git\index

?????文件????????240??2018-08-06?21:28??kdTree\.git\info\exclude

?????文件????????498??2018-08-08?14:35??kdTree\.git\logs\HEAD

?????文件????????498??2018-08-08?14:35??kdTree\.git\logs\refs\heads\master

?????文件????????174??2018-08-06?21:28??kdTree\.git\logs\refs\remotes\origin\HEAD

?????文件????????282??2018-08-08?14:36??kdTree\.git\logs\refs\remotes\origin\master

?????文件????????191??2018-08-08?14:35??kdTree\.git\objects\07\34e26a1c221516a829fd27013c83152fa9d676

?????文件????????509??2018-08-06?21:28??kdTree\.git\objects\0a\42d1775bd0826ecd725160b18d9d2b6c965c59

?????文件????????255??2018-08-08?14:35??kdTree\.git\objects\0b\43ec2ba421b51ef85591b95feb88670dbc0981

?????文件????????252??2018-08-06?21:33??kdTree\.git\objects\1d\35ea9d23f4889213b948434585ac47b58fdbcd

?????文件????????277??2018-08-08?14:35??kdTree\.git\objects\21\d5a4ce991c7c4d633793107ddd1469461e7f71

?????文件?????????54??2018-08-06?21:28??kdTree\.git\objects\3a\19e3c40d319060988ac3018bc62285f847a58c

?????文件?????????79??2018-08-06?21:28??kdTree\.git\objects\4d\2cec4e8ca99a9848297069918fe11ebc9927cc

?????文件????????212??2018-08-06?21:33??kdTree\.git\objects\55\5bab3fd4d4549376d4b668ca61bd1c972fb33d

?????文件????????727??2018-08-06?21:33??kdTree\.git\objects\57\9fe9102074cf76ea130cdd2ee2951b8858591c

............此處省略66個文件信息