init

.gitignore

@@ -0,0 +1 @@
+build

.vscode/c_cpp_properties.json

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+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${workspaceFolder}/build/_deps/fmt-src/include",
+                "${workspaceFolder}/build/_deps/googletest-src/googletest/include"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c17",
+            "cppStandard": "gnu++17",
+            "intelliSenseMode": "linux-gcc-x64"
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

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+{
+    "files.associations": {
+        "any": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "codecvt": "cpp",
+        "compare": "cpp",
+        "complex": "cpp",
+        "concepts": "cpp",
+        "condition_variable": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "forward_list": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "semaphore": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "stop_token": "cpp",
+        "streambuf": "cpp",
+        "thread": "cpp",
+        "cinttypes": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp",
+        "variant": "cpp"
+    }
+}

0001.h

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+#include "common.h"
+
+using namespace std;
+namespace s0001 {
+    class Solution {
+    public:
+        vector<int> twoSum(vector<int>& nums, int target) {
+            unordered_map<int, int> m;
+            for (int i=0; i<nums.size(); i++){
+                int tmp = target - nums[i];
+                auto iter = m.find(tmp);
+                if (iter == m.end())
+                    m[nums[i]] = i;
+                else
+                    return {iter->second, i};
+            }
+            return {-1, -1};
+        }
+    };
+}

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14)
+
+# set the project name
+project(test VERSION 1.0.0)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(src_list test.cc)
+include(FetchContent)
+
+FetchContent_Declare(
+    fmt
+    GIT_REPOSITORY https://github.com/fmtlib/fmt.git
+    GIT_TAG master
+)
+FetchContent_Declare(
+    googletest
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    GIT_TAG main
+)
+
+FetchContent_MakeAvailable(fmt googletest)
+
+# add the executable
+add_executable(${PROJECT_NAME} ${src_list})
+
+target_include_directories(${PROJECT_NAME} PUBLIC
+                           ${PROJECT_BINARY_DIR}
+                           )
+target_link_libraries(${PROJECT_NAME}
+    PRIVATE
+        fmt::fmt
+        gtest_main
+)

common.h

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+#include <vector>
+#include <unordered_map>

test.cc

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+#include "0001.h"
+#include <gtest/gtest.h>
+
+
+TEST(S001, Normal) {
+    s0001::Solution s;
+    std::vector<int> v = {1,2,3};
+    // std::vector<int> r = {0,1};
+    EXPECT_EQ(std::vector<int>({0,1}), s.twoSum(v, 3));
+}