Henry questions

Henry answers

• Why naive primality test algorithm is not polynomial
• How to solve coin change task when order does matters?
• Is there an Algorithm for finding the minimum number of classrooms for scheduling n classes in O(nlogn)?
• should I be using slf4j isTraceEnabled or not?
• Html.fromHtml not working
• How to efficiently find 10 greatest numbers from billions of numbers?
• What is a better method to solve this prob?
• is (n+1)! in the order of (n!)? can you show me a proof?
• How to send Integer value in the form of JSON format and recieve in REST Controller?
• Checking `instanceof` while iterating through a loop