What was Bill Gates’s contribution to the optimized pancake-sorting problem?
I've come across references to Bill Gates's work on pancake sorting, but I haven't found a clear explanation of the optimized solution attributed to him. Did Gates and…
algorithm optimization
How Can I Avoid Time Limit Exceeded When Updating Symmetric Grid Cells?
I have an N×N grid containing '.' and '#', along with U cell updates. Each cell belongs to a group of up to four positions related by horizontal…
What’s the simplest way to change one digit into a valid special number?
I'm working in C# with a four-digit random number and a list of special numbers, such as 1225 and 2112. I want to detect whether the random number…