add solution of hw1

.vscode/launch.json

@@ -0,0 +1,22 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "nyplaylists",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${fileDirname}/${fileBasenameNoExtension}", // 指向你的可执行文件
+            "args": [
+                "playlist_tiny2.txt",
+                "actions2.txt",
+                "output.txt",
+                "debug"
+            ],
+            "cwd": "${fileDirname}",
+            "environment": [],
+            "MIMode": "gdb",
+            "miDebuggerPath": "/usr/bin/gdb",
+            "preLaunchTask": "C/C++: g++ build active file"
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,55 @@
+{
+    "files.associations": {
+        "fstream": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "complex": "cpp",
+        "concepts": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "typeinfo": "cpp"
+    }
+}

.vscode/tasks.json

@@ -6,8 +6,11 @@
             "command": "/usr/bin/g++",
             "args": [
                 "-fdiagnostics-color=always",
+                "-std=c++17",
+                "-Wall",
+                "-Wextra",
                 "-g",
-                "${file}",
+                "*.cpp",
                 "-o",
                 "${fileDirname}/${fileBasenameNoExtension}"
             ],