chore: add math equations

Author: JuneLin2001

docusaurus.config.ts

@@ -1,6 +1,8 @@
 import { themes as prismThemes } from "prism-react-renderer";
 import type { Config } from "@docusaurus/types";
 import type * as Preset from "@docusaurus/preset-classic";
+import remarkMath from "remark-math";
+import rehypeKatex from "rehype-katex";
 
 const config: Config = {
   title: "LeetCode and Codewars solutions",
@@ -21,13 +23,24 @@ const config: Config = {
           routeBasePath: "/",
           sidebarPath: require.resolve("./sidebars.js"),
           editUrl: "https://github.com/JuneLin2001/solve-problems/edit/main/",
+          remarkPlugins: [remarkMath],
+          rehypePlugins: [rehypeKatex],
         },
         theme: {
           customCss: require.resolve("./src/css/custom.css"),
         },
       } satisfies Preset.Options,
     ],
   ],
+  stylesheets: [
+    {
+      href: "https://cdn.jsdelivr.net/npm/katex@0.13.24/dist/katex.min.css",
+      type: "text/css",
+      integrity:
+        "sha384-odtC+0UGzzFL/6PNoE8rX/SPcQDXBJ+uRepguP4QkPCm2LBxH3FA3y+fKSiJ+AmM",
+      crossorigin: "anonymous",
+    },
+  ],
 
   themeConfig: {
     image: "img/docusaurus-social-card.jpg",

package-lock.json

@@ -21,7 +21,9 @@
     "clsx": "^2.0.0",
     "prism-react-renderer": "^2.3.0",
     "react": "^19.0.0",
-    "react-dom": "^19.0.0"
+    "react-dom": "^19.0.0",
+    "rehype-katex": "^7.0.1",
+    "remark-math": "^6.0.0"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "3.7.0",