Smart C++ autocomplete for LeetCode using Monaco and Tree-sitter
Users
80
+28 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
+1 in 30 days
Store rank
#92K
#77K among extensions
Version
1.0
updated 2 Jul 2026
Users
monthly, 4 months
Latest, 19 Oct 2026:80 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 19 Oct 2026:3 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About LeetCode C++ Autocomplete
LeetComplete – Intelligent C++ Autocomplete for LeetCode
LeetComplete enhances the LeetCode coding experience by bringing modern IDE-style autocomplete directly into the browser. Instead of memorizing STL APIs or repeatedly switching to documentation, get fast, context-aware suggestions while solving problems.
Designed specifically for competitive programmers and interview preparation, LeetComplete helps you write C++ code faster with minimal interruptions.
✨ Features
1) Semantic Autocomplete
Receive context-aware suggestions based on the type of your variables.
Example:
priority_queue<int> pq;
pq.
Suggestions:
{
push()
pop()
top()
empty()
size()
}
The extension analyzes your code and recommends methods that belong to the detected C++ STL type.
2) Prefix (Trie-Based) Suggestions
Start typing STL names and instantly receive completions.
Examples:
vec
→ vector
pri
→ priority_queue
unordered_
→ unordered_map
→ unordered_set
Fast prefix lookup helps reduce typing and improves coding speed.
You can choose Your Completion Mode
Customize the behavior to match your workflow.
Choose between:
Semantic Completion
Prefix (Trie) Completion
Both Combined (Recommended)
Optimized specifically for LeetCode.
No unnecessary clutter—just the completions that matter while solving problems.
⚙️ Lightweight & Fast
Runs entirely inside your browser.
No external servers.
No code uploads.
Minimal overhead while typing.
Why Use LeetComplete?
✔ Write solutions faster.
✔ Enjoy an IDE-like experience directly on LeetCode.
✔ Improve coding efficiency during interview preparation and contests.
Privacy
LeetComplete processes your code locally inside the browser.
No source code is uploaded.
No personal data is collected.
No tracking or analytics.
Your code never leaves your browser.
Current Capabilities
1)C++ STL member completion
2)Prefix-based keyword completion
3)Configurable completion modes
4)Fast semantic analysis for common STL containers
Planned Features
1)More STL support
2)Smarter type inference
3)Better handling of nested expressions
4)Function signature assistance
5)User-defined type support
6)More languages in future updates
Code faster. Think less about syntax. Focus on solving the problem.
LeetComplete brings intelligent C++ autocomplete to LeetCode—right where you need it.
Growth
Window
Users
Change
Ratings
Rating
7 days
+7
+9.6%
+1
0.00
30 days
+28
+53.8%
+1
0.00
Chrome Web Store search rankings
Where LeetCode C++ Autocomplete appears when people search the store, with the 30 day change