Missing the instruction panel where the customer is attempting to follow the baffling instructions and has to use a wired phone to call the store for help.
Getting quicksort's boundary conditions right (avoiding off-by-one errors, infinite recursion, etc.) can be tricky.
Another popular algorithm that can be hard to get right is binary search.
This is so cool! Not only is the design similar, but just like the real IKEA instructions, I can't understand them! This is as realistic as it gets.
Missing the instruction panel where the customer is attempting to follow the baffling instructions and has to use a wired phone to call the store for help.
Getting quicksort's boundary conditions right (avoiding off-by-one errors, infinite recursion, etc.) can be tricky.
Another popular algorithm that can be hard to get right is binary search.