FE Prep

Sign in to track your progress

Continue without an account

Start Here – FE Crash Course

100 handpicked problems in the right study order

Fall 2025 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
397	Merge Two Bank Accounts	Med.	Fall 2025
398	The Mysterious K Shift	Med.	Fall 2025
399	Circular Battle Arena	Hard	Fall 2025
400	Recursive Binary Tree Sum	Easy	Fall 2025
401	Min-Heap Array Simulation	Med.	Fall 2025
402	Fixed Length Word Search	Hard	Fall 2025
403	Nested Loop Binary Search	Hard	Fall 2025
404	Cubic Root Runtime	Med.	Fall 2025
405	Sum of First 2n Cubes	Med.	Fall 2025
406	Recursive Mist Spray	Med.	Fall 2025
407	Trace Bubble Sort Iterations	Easy	Fall 2025
408	Bitwise Subset Sum	Insane	Fall 2025
385	Resize 2D Array by Tripling Columns	Med.	Summer 2025
386		Hard	Summer 2025
387	Infix to Postfix Evaluation 10	Med.	Summer 2025
388	Add or Subtract Values in Binary Tree	Med.	Summer 2025
389	Quadratic Probing with Custom Hash Function	Med.	Summer 2025
390	Prefix Prediction for Next Trie Letter	Hard	Summer 2025
391	Count Bit Flips in Binary Counter Sequence	Insane	Summer 2025
392		Med.	Summer 2025
393	Closed Form Solution for Summation of i + 3i	Med.	Summer 2025
394	Compute Highest Exponent Within Bound	Hard	Summer 2025
395		Easy	Summer 2025
396	Validate New User ID by Bit Difference	Hard	Summer 2025
373	Deallocate Memory for Book Structures	Med.	Spring 2025