LANGUAGE REFERENCE

Python and Java guides

Follow Python control flow, choose a container or check what Java callers can change. Each guide explains the relevant language rules with a worked example.

Python

6 guides available

Python try, except, else and finally: follow one failed conversion Learn Python try/except with runnable examples. Trace else and finally, catch the right exception, and avoid hiding unrelated failures. Read guide
Python RecursionError: fix the cause before raising the limit Fix maximum recursion depth exceeded in Python. Distinguish a missing stop condition, a self-calling property, a cycle, and a genuinely deep input. Read guide
deque in Python Know when a Python deque beats a list, why the middle stays O(n) while both ends stay O(1), and how maxlen silently discards the data you meant to keep. Read guide
Linked list in Python: build one, then choose the right container Implement a minimal singly linked list in Python, check its operation costs, and learn when list or collections.deque is the better tool. Read guide
Priority queues and binary heaps in Python Use Python heapq to build a binary heap, retrieve priorities, keep equal-priority tasks in arrival order, and understand operation costs. Read guide
Topological sort: Kahn's algorithm in Python Trace a dependency order, run Kahn's algorithm in Python, detect a cycle, and compare DFS with graphlib's TopologicalSorter. Read guide

Java

3 guides available