347. Top K Frequent Elements

.idea/.idea.Leetcode/.idea/workspace.xml

@@ -42,6 +42,7 @@
     <projectFile>299. Bulls and Cows/299. Bulls and Cows.csproj</projectFile>
     <projectFile>3. Longest Substring Without Repeating Characters/3. Longest Substring Without Repeating Characters.csproj</projectFile>
     <projectFile>344. Reverse String/344. Reverse String.csproj</projectFile>
+    <projectFile>347. Top K Frequent Elements/347. Top K Frequent Elements.csproj</projectFile>
     <projectFile>35. Search Insert Position/35. Search Insert Position.csproj</projectFile>
     <projectFile>350. Intersection of Two Arrays II/350. Intersection of Two Arrays II.csproj</projectFile>
     <projectFile>36. Valid Sudoku/36. Valid Sudoku.csproj</projectFile>
@@ -89,9 +90,11 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="11f2de1c-1ee5-4aa4-91e6-11975ebd421f" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/451. Sort Characters By Frequency/Fast/FastSolution.cs" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/347. Top K Frequent Elements/347. Top K Frequent Elements.csproj" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/347. Top K Frequent Elements/Program.cs" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/347. Top K Frequent Elements/Solution.cs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/451. Sort Characters By Frequency/Program.cs" beforeDir="false" afterPath="$PROJECT_DIR$/451. Sort Characters By Frequency/Program.cs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/Leetcode.sln" beforeDir="false" afterPath="$PROJECT_DIR$/Leetcode.sln" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -127,6 +130,7 @@
   "keyToString": {
     ".NET Project.14. Longest Common Prefix.executor": "Run",
     ".NET Project.150. Evaluate Reverse Polish Notation.executor": "Run",
+    ".NET Project.347. Top K Frequent Elements.executor": "Run",
     ".NET Project.451. Sort Characters By Frequency.executor": "Run",
     ".NET Project.9. Palindrome Number.executor": "Run",
     "ASKED_ADD_EXTERNAL_FILES": "true",
@@ -151,7 +155,7 @@
     ]
   }
 }]]></component>
-  <component name="RunManager" selected=".NET Project.451. Sort Characters By Frequency">
+  <component name="RunManager" selected=".NET Project.347. Top K Frequent Elements">
     <configuration name="101. Symmetric Tree" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -908,6 +912,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="347. Top K Frequent Elements" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/347. Top K Frequent Elements/347. Top K Frequent Elements.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="350. Intersection of Two Arrays II" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -1701,7 +1723,7 @@
       <workItem from="1678030078340" duration="114000" />
       <workItem from="1680804946367" duration="3697000" />
       <workItem from="1706644472303" duration="7903000" />
-      <workItem from="1707331420927" duration="1097000" />
+      <workItem from="1707331420927" duration="3074000" />
     </task>
     <servers />
   </component>

347. Top K Frequent Elements/347. Top K Frequent Elements.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <RootNamespace>_347._Top_K_Frequent_Elements</RootNamespace>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>

347. Top K Frequent Elements/Program.cs

@@ -0,0 +1,4 @@
+using _347._Top_K_Frequent_Elements;
+
+var sol = new Solution();
+Console.WriteLine(string.Join(", ", sol.TopKFrequent([1,1,1,2,2,3], 2)));

347. Top K Frequent Elements/Solution.cs

@@ -0,0 +1,13 @@
+namespace _347._Top_K_Frequent_Elements;
+
+public class Solution
+{
+    public int[] TopKFrequent(int[] nums, int k)
+    {
+        var dictionary = new Dictionary<int, int>();
+        foreach (var num in nums)
+            if (!dictionary.TryAdd(num, 1))
+                dictionary[num]++;
+        return dictionary.OrderByDescending(kp=>kp.Value).Take(k).Select(kp=>kp.Key).ToArray();
+    }
+}

Leetcode.sln

@@ -173,6 +173,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "9. Palindrome Number", "9.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "451. Sort Characters By Frequency", "451. Sort Characters By Frequency\451. Sort Characters By Frequency.csproj", "{CA2D97FB-8F9D-40C0-BCE6-CBF0528AE296}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "347. Top K Frequent Elements", "347. Top K Frequent Elements\347. Top K Frequent Elements.csproj", "{F4DE54A1-6881-445A-A6B6-2206293D2F2E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -519,6 +521,10 @@ Global
 		{CA2D97FB-8F9D-40C0-BCE6-CBF0528AE296}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{CA2D97FB-8F9D-40C0-BCE6-CBF0528AE296}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CA2D97FB-8F9D-40C0-BCE6-CBF0528AE296}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F4DE54A1-6881-445A-A6B6-2206293D2F2E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F4DE54A1-6881-445A-A6B6-2206293D2F2E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F4DE54A1-6881-445A-A6B6-2206293D2F2E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F4DE54A1-6881-445A-A6B6-2206293D2F2E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE