docs: add populate-notes.mjs to leetcode/AGENTS.md

org/study_deck_02/dsa/arrays-hashing/0217-contains-duplicate.org

@@ -45,6 +45,12 @@ Write your approach here.
 #+begin_src python
 class Solution:
     def containsDuplicate(self, nums: List[int]) -> bool:
+        s = set()
+        for x in nums:
+            if x in s:
+                return True
+            s.add(x)
+        return False
 #+end_src
 
 ** TODO C++

org/study_deck_02/roadmap.org

@@ -21,8 +21,15 @@ Source: [[https://neetcode.io/roadmap][neetcode.io/roadmap]]
 Notes: [[file:dsa/arrays-hashing/0217-contains-duplicate.org]]
 ** TODO 0242. Valid Anagram :easy:
 :PROPERTIES:
-:LEETCODE: [[https://leetcode.com/problems/valid-anagram/][Problem]]
-:CPP:      [[https://github.com/neetcode-gh/leetcode/blob/main/cpp/0242-valid-anagram.cpp][Solution]]
+:LEETCODE: [[https://lclass Solution:
+    def containsDuplicate(self, nums: List[int]) -> bool:
+        s = set()
+        for x in nums:
+            if x in s:
+                return True
+            s.add(x)
+        return False
+.com/neetcode-gh/leetcode/blob/main/cpp/0242-valid-anagram.cpp][Solution]]
 :PYTHON:   [[https://github.com/neetcode-gh/leetcode/blob/main/python/0242-valid-anagram.py][Solution]]
 :VIDEO:    [[https://youtube.com/watch?v=9UtInBqnCgA][Watch]]
 :END: