Cheat sheets
One page each, made to be kept open in a tab the week before an interview — or printed. Every row links to the lesson that animates it.
78 rows · 94 lessons linked
Big-O cheat sheet
Time and space complexity of every data structure and algorithm on BytePatterns, from hash tables to Dijkstra, each row linked to its animated lesson.
Updated
23 patterns · a lesson and practice for each
Interview patterns cheat sheet
The coding-interview patterns worth knowing: when to reach for each, the signals in a problem statement that give it away, and a lesson and practice for each.
Updated
10 interview queries · 9 topics · every result run on SQLite
SQL interview cheat sheet
Execution order, joins, window functions, NULL, indexes and the classic interview queries, each with the rows SQLite returned.
Updated
54 snippets · 10 templates · every output from a real run
Python interview cheat sheet
The Python an interviewer expects: data structure costs, sorting, strings, itertools, traps and ten templates, each snippet with the output it printed.
Updated
New lessons land every few weeks
Leave an address and we will tell you when the next one is up. That is the only reason we will use it.