Mergesort and Quicksort
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Ben
84
Quicksort and Mergesort/Quicksort and Mergesort.cpp
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84
Quicksort and Mergesort/Quicksort and Mergesort.cpp
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#include <iostream>
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void PrintArr(int* arr, int size)
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{
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for (int i = 0; i < size; i++)
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{
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std::cout << arr[i] << " ";
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}
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std::cout << std::endl;
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}
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void ShuffleArr(int* arr, int size)
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{
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size_t i;
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for (i = 0; i < size - 1; i++)
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{
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size_t j = i + rand() / (RAND_MAX / (size - i) + 1);
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int t = arr[j];
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arr[j] = arr[i];
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arr[i] = t;
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}
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}
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void Swap(int* a, int* b)
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{
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int t = *a;
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*a = *b;
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*b = t;
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}
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void CopyArr(int* source, int* target, int start, int end)
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{
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for (int i = start; i < end; i++)
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{
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target[i] = source[i];
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}
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}
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void Merge(int* arr, int start, int mid, int end)
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{
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std::cout << start << " " << mid << " " << end << std::endl;
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int* leftHalf = new int[mid - start + 1];
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int* rightHalf = new int[end - mid];
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CopyArr(arr, leftHalf, 0, mid);
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CopyArr(arr, rightHalf, mid + 1, end);
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// merge together
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int leftIndex = 0;
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int rightIndex = 0;
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for (int i = 0; i < end - start; i++)
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{
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}
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}
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void MergeSort(int* arr, int start, int end)
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{
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int mid = start + (start + end) / 2;
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if (start >= end)
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MergeSort(arr, start, mid);
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MergeSort(arr, mid + 1, end);
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Merge(arr, start, mid, end);
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}
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int main()
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{
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int* arr = new int[100];
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for (int i = 0; i < 100; i++)
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arr[i] = i;
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// MergeSort
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std::cout << "Merge Sort" << std::endl;
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ShuffleArr(arr, 100);
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MergeSort(arr, 0, 100);
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PrintArr(arr, 100);
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// QuickSort
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ShuffleArr(arr, 100);
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}
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31
Quicksort and Mergesort/Quicksort and Mergesort.sln
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31
Quicksort and Mergesort/Quicksort and Mergesort.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.0.31808.319
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Quicksort and Mergesort", "Quicksort and Mergesort.vcxproj", "{8B9DC41C-3596-4DF8-9033-C271426EA8C0}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|x64 = Debug|x64
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Debug|x86 = Debug|x86
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Release|x64 = Release|x64
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Release|x86 = Release|x86
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Debug|x64.ActiveCfg = Debug|x64
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Debug|x64.Build.0 = Debug|x64
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Debug|x86.ActiveCfg = Debug|Win32
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Debug|x86.Build.0 = Debug|Win32
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Release|x64.ActiveCfg = Release|x64
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Release|x64.Build.0 = Release|x64
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Release|x86.ActiveCfg = Release|Win32
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{8B9DC41C-3596-4DF8-9033-C271426EA8C0}.Release|x86.Build.0 = Release|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {DD9C34C8-2219-48FD-BBD7-795EA892E0DB}
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EndGlobalSection
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EndGlobal
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147
Quicksort and Mergesort/Quicksort and Mergesort.vcxproj
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147
Quicksort and Mergesort/Quicksort and Mergesort.vcxproj
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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup Label="ProjectConfigurations">
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<ProjectConfiguration Include="Debug|Win32">
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<Configuration>Debug</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Debug|x64">
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<Configuration>Debug</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|x64">
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<Configuration>Release</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<VCProjectVersion>16.0</VCProjectVersion>
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<Keyword>Win32Proj</Keyword>
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<ProjectGuid>{8b9dc41c-3596-4df8-9033-c271426ea8c0}</ProjectGuid>
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<RootNamespace>QuicksortandMergesort</RootNamespace>
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<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Label="Shared">
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<PropertyGroup Label="UserMacros" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<LinkIncremental>true</LinkIncremental>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<LinkIncremental>false</LinkIncremental>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<LinkIncremental>true</LinkIncremental>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<LinkIncremental>false</LinkIncremental>
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</PropertyGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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</ItemDefinitionGroup>
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<ItemGroup>
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<ClCompile Include="Quicksort and Mergesort.cpp" />
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</ItemGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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</ImportGroup>
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</Project>
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