Add solution #2633

JoshCrozier · JoshCrozier · commit 8c3c2f77cefb · 2025-06-08T20:37:39.000-05:00
diff --git a/README.md b/README.md
@@ -1976,6 +1976,7 @@
 2630|[Memoize II](./solutions/2630-memoize-ii.js)|Hard|
 2631|[Group By](./solutions/2631-group-by.js)|Medium|
 2632|[Curry](./solutions/2632-curry.js)|Medium|
+2633|[Convert Object to JSON String](./solutions/2633-convert-object-to-json-string.js)|Medium|
 2634|[Filter Elements from Array](./solutions/2634-filter-elements-from-array.js)|Easy|
 2635|[Apply Transform Over Each Element in Array](./solutions/2635-apply-transform-over-each-element-in-array.js)|Easy|
 2636|[Promise Pool](./solutions/2636-promise-pool.js)|Medium|
diff --git a/solutions/2633-convert-object-to-json-string.js b/solutions/2633-convert-object-to-json-string.js
@@ -0,0 +1,29 @@
+/**
+ * 2633. Convert Object to JSON String
+ * https://leetcode.com/problems/convert-object-to-json-string/
+ * Difficulty: Medium
+ *
+ * Given a value, return a valid JSON string of that value. The value can be a string, number,
+ * array, object, boolean, or null. The returned string should not include extra spaces. The
+ * order of keys should be the same as the order returned by Object.keys().
+ *
+ * Please solve it without using the built-in JSON.stringify method.
+ */
+
+/**
+ * @param {null|boolean|number|string|Array|Object} object
+ * @return {string}
+ */
+var jsonStringify = function(object) {
+  if (object === null) return 'null';
+  if (typeof object === 'boolean' || typeof object === 'number') return String(object);
+  if (typeof object === 'string') return `"${object}"`;
+
+  if (Array.isArray(object)) {
+    const elements = object.map(item => jsonStringify(item));
+    return `[${elements.join(',')}]`;
+  }
+
+  const pairs = Object.keys(object).map(key => `"${key}":${jsonStringify(object[key])}`);
+  return `{${pairs.join(',')}}`;
+};
