Introduction Implementing Rock-Paper-Scissors (RPS) on-chain is surprisingly tricky. The moment you choose "Rock" and send a transaction, your opponent can read your move from the public ledger. The game is over before it even starts. I tried implementing a commit-reveal pattern manually, but managing salts, preventing front-running, and ensuring fair judging logic... it quickly became a rabbit
A few years ago I solved 200 LeetCode problems and still froze on Mediums I hadn't seen. The breakthrough wasn't another hundred problems. It was a different loop. A problem asks for the longest substring with at most K distinct characters. You've solved sliding window before. Maximum sum subarray of size K, done. Longest substring without repeating characters, done. This third one stalls you. Twe