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
I remember when we met. It feels like forever ago. Was it 2003? We'd talk for hours. Deep into the night. One number press at a time. Because that's how it was back then. And we learned from each other. Tons, actually. And we both improved over the years. We both grew. A lot. But I don't think I grew into something I like. But I mean, I didn't really mean to become what I am. Just some t