If you code for a living then it’s still helpful as it’s just leetcode but slightly more engaging as you could have peers solving the same problem as you to discuss with. Plus if you code for a living, “little meaningless challenges” are less of a time sink than a whole side project for when you wanna dip your toes into a new language/system/design pattern.

I feel like small puzzles like this help me get into more of a live to code mindset, which I personally enjoy more than thinking of my life as code for a living.

Would you prefer challenges about technical debt, scope creep and legislation changes forcing large rewrites? Coding for a living can be rewarding but in many large organisations is often tedious.