🧠 Drill · Think it through
The shortest rainy stretch
The problem
You have a list of daily rainfall amounts. Find the length of the shortest contiguous run of days whose rainfall adds up to at least a target amount, or report that no such run exists. The days must be back-to-back, and all the amounts are positive.
Don't jump to code. Walk the four questions an expert asks first — you'll build the habit, not just the answer.
1
Restate it
Before anything else — did you read what's actually being asked? Strip the story to the bare goal.
Strip away the story. What are we actually asked to return?