add tree file

.idea/.gitignore

@@ -1,8 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml

.idea/leetcode.iml

@@ -2,11 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-<<<<<<< Updated upstream
-    <orderEntry type="jdk" jdkName="Python 3.8 (py38) (3)" jdkType="Python SDK" />
-=======
-    <orderEntry type="jdk" jdkName="Python 3.9" jdkType="Python SDK" />
->>>>>>> Stashed changes
+    <orderEntry type="jdk" jdkName="Python 3.8 (py38_schoolcert) (2)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

.idea/misc.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8 (py38_schoolcert) (2)" project-jdk-type="Python SDK" />
 </project>

.idea/workspace.xml

@@ -0,0 +1,239 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="feffb8c5-f6a5-4b86-90a5-e4cb1b5e75fe" name="Changes" comment="Changes">
+      <change afterPath="$PROJECT_DIR$/tree/symmetric_tree.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/.gitignore" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/inspectionProfiles/profiles_settings.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/leetcode.iml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/modules.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/vcs.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/tree/inorder_transversal.py" beforeDir="false" afterPath="$PROJECT_DIR$/tree/inorder_transversal.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/tree/same_tree.py" beforeDir="false" afterPath="$PROJECT_DIR$/tree/same_tree.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/tree/tree.py" beforeDir="false" afterPath="$PROJECT_DIR$/tree/tree.py" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Python Script" />
+      </list>
+    </option>
+  </component>
+  <component name="FlaskConsoleOptions" custom-start-script="import sys&#10;sys.path.extend([WORKING_DIR_AND_PYTHON_PATHS])&#10;from flask.cli import ScriptInfo&#10;locals().update(ScriptInfo(create_app=None).load_app().make_shell_context())&#10;print(&quot;Python %s on %s\nApp: %s [%s]\nInstance: %s&quot; % (sys.version, sys.platform, app.import_name, app.env, app.instance_path))">
+    <envs>
+      <env key="FLASK_APP" value="app" />
+    </envs>
+    <option name="myCustomStartScript" value="import sys&#10;sys.path.extend([WORKING_DIR_AND_PYTHON_PATHS])&#10;from flask.cli import ScriptInfo&#10;locals().update(ScriptInfo(create_app=None).load_app().make_shell_context())&#10;print(&quot;Python %s on %s\nApp: %s [%s]\nInstance: %s&quot; % (sys.version, sys.platform, app.import_name, app.env, app.instance_path))" />
+    <option name="myEnvs">
+      <map>
+        <entry key="FLASK_APP" value="app" />
+      </map>
+    </option>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="HighlightingSettingsPerFile">
+    <setting file="file://$PROJECT_DIR$/draft.py" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/linklist/delete_duplicates.py" root0="FORCE_HIGHLIGHTING" />
+  </component>
+  <component name="MarkdownSettingsMigration">
+    <option name="stateVersion" value="1" />
+  </component>
+  <component name="ProjectId" id="2FFEheGapc9l6nxgKAOaCwuJ7RU" />
+  <component name="ProjectLevelVcsManager">
+    <ConfirmationsSetting value="2" id="Add" />
+  </component>
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;WebServerToolWindowFactoryState&quot;: &quot;true&quot;,
+    &quot;last_opened_file_path&quot;: &quot;/Users/sxkj/Desktop/PycharmProjects/leetcode&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;com.jetbrains.python.configuration.PythonContentEntriesConfigurable&quot;
+  }
+}</component>
+  <component name="RecentsManager">
+    <key name="MoveFile.RECENT_KEYS">
+      <recent name="$PROJECT_DIR$/dichotomy" />
+      <recent name="$PROJECT_DIR$/double_pointer" />
+    </key>
+  </component>
+  <component name="RunManager" selected="Python.spiral_matrix">
+    <configuration name="max_profit" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="leetcode" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/array" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/array/max_profit.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="sortedArray_to_bst" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="leetcode" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/tree" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/tree/sortedArray_to_bst.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="spiral_matrix" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="leetcode" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/spiral_matrix.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="yang_hui_triangle1" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="leetcode" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/array" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/array/yang_hui_triangle1.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="yang_hui_triangle2" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="leetcode" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/array" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/array/yang_hui_triangle2.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Python.spiral_matrix" />
+        <item itemvalue="Python.max_profit" />
+        <item itemvalue="Python.yang_hui_triangle2" />
+        <item itemvalue="Python.yang_hui_triangle1" />
+        <item itemvalue="Python.sortedArray_to_bst" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="feffb8c5-f6a5-4b86-90a5-e4cb1b5e75fe" name="Changes" comment="" />
+      <created>1664079553719</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1664079553719</updated>
+      <workItem from="1664079556769" duration="15004000" />
+      <workItem from="1664190780837" duration="4436000" />
+      <workItem from="1664348891516" duration="6280000" />
+      <workItem from="1664446947505" duration="7966000" />
+      <workItem from="1664514177200" duration="55000" />
+      <workItem from="1665388551657" duration="2289000" />
+      <workItem from="1665623548333" duration="3300000" />
+      <workItem from="1665735638586" duration="386000" />
+      <workItem from="1665736032491" duration="3472000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="3" />
+  </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+  <component name="com.intellij.coverage.CoverageDataManagerImpl">
+    <SUITE FILE_PATH="coverage/leetcode$spiral_matrix.coverage" NAME="spiral_matrix 覆盖结果" MODIFIED="1665735811414" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />
+    <SUITE FILE_PATH="coverage/leetcode$is_happy.coverage" NAME="is_happy Coverage Results" MODIFIED="1664114928426" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/double_pointer" />
+    <SUITE FILE_PATH="coverage/leetcode$yang_hui_triangle2.coverage" NAME="yang_hui_triangle2 覆盖结果" MODIFIED="1664367317718" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/array" />
+    <SUITE FILE_PATH="coverage/leetcode$is__palindrome.coverage" NAME="is_ palindrome Coverage Results" MODIFIED="1664090751230" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/double_pointer" />
+    <SUITE FILE_PATH="coverage/leetcode$sortedArray_to_bst.coverage" NAME="sortedArray_to_bst 覆盖结果" MODIFIED="1664193262755" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/tree" />
+    <SUITE FILE_PATH="coverage/leetcode$.coverage" NAME=" Coverage Results" MODIFIED="1664094064046" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/double_pointer" />
+    <SUITE FILE_PATH="coverage/leetcode$draft.coverage" NAME="draft Coverage Results" MODIFIED="1664087806364" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />
+    <SUITE FILE_PATH="coverage/leetcode$yang_hui_triangle.coverage" NAME="yang_hui_triangle1 覆盖结果" MODIFIED="1664366901324" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/array" />
+    <SUITE FILE_PATH="coverage/leetcode$max_profit.coverage" NAME="max_profit 覆盖结果" MODIFIED="1664452211665" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/array" />
+  </component>
+</project>

tree/inorder_transversal.py

@@ -1,8 +1,5 @@
-class TreeNode:
-    def __init__(self, val=0, left=None, right=None):
-        self.val = val
-        self.left = left
-        self.right = right
+from typing import Optional, List
+from tree import TreeNode
 
 class Solution:
     def inorderTraversal(self, root: Optional[TreeNode]) -> List[int]:

tree/same_tree.py

@@ -1,2 +1,13 @@
+from typing import Optional
+from tree import TreeNode
+
 class Solution:
     def isSameTree(self, p: Optional[TreeNode], q: Optional[TreeNode]) -> bool:
+        if not p and not q:
+            return True
+        elif not p or not q:
+            return False
+        elif p.val != q.val:
+            return False
+        else:
+            return self.isSameTree(p.left, q.left) and self.isSameTree(p.right, q.right)

tree/symmetric_tree.py

@@ -0,0 +1,16 @@
+from typing import Optional
+from tree import TreeNode
+
+
+class Polution:
+    def isSymmetric(self, root: Optional[TreeNode]) -> bool:
+        p = root.left
+        q = root.right
+        while p and q:
+            if p.val == q.val:
+                p = p.left
+                q = q.right
+            else:
+                return False
+
+

tree/tree.py

@@ -1,3 +1,5 @@
+from typing import Optional
+
 
 class TreeNode:
     def __init__(self, val=0, left=None, right=None):
@@ -5,6 +7,32 @@ class TreeNode:
         self.left = left
         self.right = right
 
+class Solution:
+    # 中序遍历
+    def inorderTraversal(self, root: Optional[TreeNode]):
+        if root == None:
+            return []
+        left = self.inorderTraversal(root.left)
+        right = self.inorderTraversal(root.right)
+        return left + [root.val] + right
+
+    # 先序遍历
+    def preorderTraversal(self, root: Optional[TreeNode]):
+        if root == None:
+            return []
+        left = self.preorderTraversal(root.left)
+        right = self.preorderTraversal(root.right)
+        return [root.val] + left + right
+
+    # 后序遍历
+    def postorderTraversal(self, root: Optional[TreeNode]):
+        if root == None:
+            return []
+        left = self.postorderTraversal(root.left)
+        right = self.postorderTraversal(root.right)
+        return left + right + [root.val]
+
+
 # 回溯通用模板
 # res = []
 #