Which language has the best loops? See for yourself, with our side-by-side (loop-for-loop) Python vs. Kotlin showdown. Find more stories in this week’s report.

Well, at least it can color in between the lines just fine.

A strong start in competitive programming begins with mastering one primary language—C++ for speed, Java for OOP, or Python for simplicity—and understanding its standard libraries. Foundational topics ...