python
Solved
Code Challenges
Small, timed coding challenges. Solve them in the browser and keep track of the ones you have solved on this device.
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python
Solved
Balanced brackets
python
Solved
Run-length encoding
python
Solved
Slugify a title
python
Solved
Merge overlapping intervals
python
Solved
LRU cache
python
Solved
Compare version numbers
javascript
Solved
Parse a query string
javascript
Solved
Deep equality
javascript
Solved
Memoize with a cache limit
python
Solved
Flatten nested settings
javascript
Solved
Group anagrams
python
Solved
Rate limiter (sliding window)
python
Solved
Parse a log file
javascript
Solved
Build a tiny event emitter
python
Solved
FizzBuzz, the honest way
python
Solved
Word frequency report
python
Solved
Validate a strong password
javascript
Solved
Debounce from scratch
python
Solved
Shortest delivery route (Dijkstra)
python
Solved
Calculator: evaluate an expression
python
Solved
Build order (topological sort)
javascript
Solved
Promise pool with a concurrency limit
javascript
Solved