FE Prep

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Start Here – FE Crash Course

100 handpicked problems in the right study order

Fall 2026 Exam

Practice the most recent exam with 12 questions

How to Pass the FE?

I lowkey suggest you read that before practicing :)

#	Title	Difficulty	Exam
433	Free Bowser Enemies Sharing One Name	Med.	Fall 2026
434	Push Front On A Doubly Linked List	Med.	Fall 2026
435	Infix To Postfix Evaluation 12	Med.	Fall 2026
436	Real Or Fake BST And Preorder Walk	Med.	Fall 2026
437	Bottom-Up Heapify In Linear Time	Hard	Fall 2026
438	Delete 80 And Rebalance Twice	Med.	Fall 2026
439	Worst-Case Big-Oh Lightning Round	Med.	Fall 2026
440	Log Squared Runtime Scaling	Med.	Fall 2026
441	Unroll 2T(3n/4) + T(N/4) + N Once	Hard	Fall 2026
442	Recursive Derangement Counter	Med.	Fall 2026
443	Sort With A Mystery Helper	Hard	Fall 2026
444	Score True Or False Tests With XOR	Hard	Fall 2026
421	Super Mario Galaxy Odd Star Log	Med.	Summer 2026
422	Hogwarts House Points Tally	Easy	Summer 2026
423	Wraparound Ring Buffer Landing Spots	Insane	Summer 2026
424	Update Subtree Sizes In A Binary Tree	Easy	Summer 2026
425	Recursive Percolate Up	Hard	Summer 2026
426	Delete It Twice Without Crashing	Hard	Summer 2026
427	Pairwise Minimum Pyramid	Hard	Summer 2026
428	Exponential Runtime Scaling	Med.	Summer 2026
429	Closed Form Of A Cubic-Term Summation	Med.	Summer 2026
430	Recursive Counting Triangle	Med.	Summer 2026
431	Counting And Maximizing Insertion Sort Swaps	Med.	Summer 2026
432	Powers Of Two Decomposition	Hard	Summer 2026
409	Mario Kart Driver Item Collection	Hard	Spring 2026