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88 k Sum II.
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‎demo.json

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"notes": "",
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"problem": "Single Number III",
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"tags": []
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},
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"88": {
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"Address": "Central Campus Mall, Boulder, CO 80302, USA",
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"Geolocation": {
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"city": "Boulder",
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"country_code": "US",
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"country_name": "United States",
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"ip": "128.138.143.155",
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"latitude": "40.015",
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"longitude": "-105.2706",
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"metro_code": "751",
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"region_code": "CO",
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"region_name": "Colorado",
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"time_zone": "America/Denver",
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"zip_code": "80309"
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},
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"date": "Tue, Mar 06, 2018 10:26:16 AM",
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"description": "",
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"link": {
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"jiuzhangsuanfa": "http://www.jiuzhang.com/solution/k-sum-ii/",
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"lintcode": "http://www.lintcode.com/en/problem/k-sum-ii/"
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},
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"notes": "",
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"problem": "k Sum II",
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"tags": []
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}
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}
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}

‎message.txt

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87 Single Number III.
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88 k Sum II.

‎src/88_k_sum_ii/.vscode/README.txt

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https://stackoverflow.com/questions/30046411/define-multiple-tasks-in-vscode
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{ "command": "myCommand"
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"args": ["myCommandArguments"],
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"tasks" : [
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{ "taskName": "myTask",
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"args": ["myTaskArguments"],
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"suppressTaskName": false,
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}
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]
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}
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The above definition will result in the following command:
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myCommand myCommandArguments myTaskArguments myTask
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The task name myTask is always last. Since version 0.4 it can be omitted with "suppressTaskName": true.

‎src/88_k_sum_ii/.vscode/c_cpp_properties.json

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{
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"configurations": [
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{
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"name": "Mac",
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"includePath": [
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"${workspaceRoot}",
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"${workspaceRoot}/../../include",
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"/usr/include",
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"/usr/local/include"
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],
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"defines": [],
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"intelliSenseMode": "clang-x64",
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"browse": {
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"path": [
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"/usr/include",
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"/usr/local/include",
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"${workspaceRoot}/../../include",
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"${workspaceRoot}"
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],
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"limitSymbolsToIncludedHeaders": true,
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"databaseFilename": ""
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},
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"macFrameworkPath": [
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"/System/Library/Frameworks",
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"/Library/Frameworks"
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]
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},
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{
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"name": "Linux",
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"includePath": [
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"${workspaceRoot}",
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"${workspaceRoot}/../../include",
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"/usr/include",
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"/usr/local/include",
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"/usr/include/x86_64-linux-gnu/c++/5",
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"/usr/lib/gcc/x86_64-linux-gnu/5/include",
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"/usr/include/c++/5"
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],
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"defines": [],
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"intelliSenseMode": "clang-x64",
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"browse": {
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"path": [
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"/usr/include",
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"/usr/local/include",
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"${workspaceRoot}/../../include",
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"${workspaceRoot}"
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],
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"limitSymbolsToIncludedHeaders": true,
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"databaseFilename": ""
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}
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},
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{
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"name": "Win32",
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"includePath": [
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"${workspaceRoot}",
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"${workspaceRoot}/../../include",
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"C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/include/*",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/um",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/ucrt",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/shared",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/winrt",
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"C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.10.25017/include/*",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/um",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/ucrt",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/shared",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/winrt",
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"C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.12.25827/include/*"
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],
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"defines": [
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"_DEBUG",
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"UNICODE"
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],
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"intelliSenseMode": "msvc-x64",
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"browse": {
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"path": [
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"${workspaceRoot}",
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"${workspaceRoot}/../../include",
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"C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/include/*",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/um",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/ucrt",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/shared",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.15063.0/winrt",
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"C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.10.25017/include/*",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/um",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/ucrt",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/shared",
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"C:/Program Files (x86)/Windows Kits/10/Include/10.0.16299.0/winrt"
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],
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"limitSymbolsToIncludedHeaders": true,
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"databaseFilename": ""
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}
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}
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],
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"version": 3
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}

‎src/88_k_sum_ii/.vscode/launch.json

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{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "(Windows) Launch",
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"type": "cppvsdbg",
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"request": "launch",
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"program": "${workspaceRoot}/solution.exe",
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"args": [],
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"stopAtEntry": false,
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"cwd": "${workspaceRoot}",
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"environment": [],
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"externalConsole": false
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},
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{
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"name": "(gdb) Launch",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceRoot}/solution.exe",
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"args": [],
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"stopAtEntry": false,
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"cwd": "${workspaceRoot}",
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"environment": [],
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"externalConsole": true,
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"MIMode": "gdb",
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"setupCommands": [
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{
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"description": "Enable pretty-printing for gdb",
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"text": "-enable-pretty-printing",
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"ignoreFailures": true
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}
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]
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}
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]
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}

‎src/88_k_sum_ii/.vscode/settings.json

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{
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"files.associations": {
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"climits": "cpp"
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}
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}

‎src/88_k_sum_ii/.vscode/tasks.json

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{
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"version": "0.1.0",
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"tasks": [
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{
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"taskName": "build",
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"args": [],
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"isBuildCommand": true,
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"showOutput": "silent",
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"suppressTaskName": true
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}
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],
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"windows": {
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"command": "build.bat",
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"isShellCommand": true,
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"showOutput": "always"
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},
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"linux": {
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"command": "g++",
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"args": [
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"-g",
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"-std=c++11",
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"-o",
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"solution.exe",
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"solution.cpp"
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],
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"isShellCommand": true,
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"showOutput": "always",
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"problemMatcher": {
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"owner": "cpp",
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"fileLocation": [
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"relative",
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"${workspaceRoot}"
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],
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"pattern": {
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"regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
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"file": 1,
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"line": 2,
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"column": 3,
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"severity": 4,
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"message": 5
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}
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}
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},
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"osx": {
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"command": "clang++",
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"args": [
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"solution.cpp",
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"-v"
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],
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"isShellCommand": true,
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"showOutput": "always",
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"problemMatcher": {
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"owner": "cpp",
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"fileLocation": [
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"relative",
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"${workspaceRoot}"
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],
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"pattern": {
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"regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
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"file": 1,
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"line": 2,
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"column": 3,
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"severity": 4,
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"message": 5
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}
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}
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}
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}

‎src/88_k_sum_ii/build.bat

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@echo off
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pushd %cd%
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REM call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x64
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call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat" x64
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popd
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echo %cd%
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set compilerflags=/Od /Zi /EHsc
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set linkerflags=/OUT:solution.exe
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set source=../../include/fileIO/fileIO.cpp ../../include/dataStructure/dataStructure.cpp ../../include/misc/misc.cpp
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cl.exe %compilerflags% solution.cpp %source% /link %linkerflags%

‎src/88_k_sum_ii/solution.cpp

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#include <iostream>
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#include <utility>
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#include <vector>
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#include <list>
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#include <set>
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#include <unordered_set>
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#include <unordered_map>
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#include <map>
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#include <queue>
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#include <stack>
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#include <forward_list>
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#include <algorithm>
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#include <climits>
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#include <string>
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#include <cstring>
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#include <cstdlib>
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#include <numeric>
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#include <functional>
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#include <iterator>
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#include "../../include/fileIO/fileIO.h"
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#include "../../include/dataStructure/dataStructure.h"
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#include "../../include/misc/misc.h"
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using namespace std;
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class Solution
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{
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public:
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/*
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* @param A: an integer array
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* @param k: a postive integer <= length(A)
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* @param targer: an integer
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* @return: A list of lists of integer
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*/
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vector<vector<int>> kSumII(vector<int> &A, int k, int target)
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{
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// write your code here
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std::vector<std::vector<int>> ans;
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backtrack(A, k, 0, ans);
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return ans;
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}
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void backtrack(vector<int> A, int k, int start, vector<vector<int>> &ans)
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{
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if (start == A.size())
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{
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ans.push_back(std::vector<int>(A.begin(), A.begin() + k));
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return;
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}
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// swap
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for (int i = start; i < A.size(); ++i)
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{
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std::swap(A[i], A[start]);
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// every swap create a new combination
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// save previous first
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backtrack(A, k, start + 1, ans);
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std::swap(A[i], A[start]);
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}
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}
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};
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int main(int argc, char **argv)
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{
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// initialization, data preparation
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std::vector<int> A = {1, 2, 3, 4};
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// my solution
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Solution sln;
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auto x = sln.kSumII(A, 2, 5);
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// correct answer
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return EXIT_SUCCESS;
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}

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