Rectangle Area
A medium-tier problem at 47% community acceptance, tagged with Math, Geometry. Reported in interviews at Nvidia and 1 others.
Rectangle Area is a medium-difficulty geometry problem that shows up in Nvidia and Google assessments. The acceptance rate sits at 47%, which means nearly half the candidates who attempt it fail or time out. The trap is simple: most people code a solution when the problem is actually pure math. You either see the formula instantly or you're stuck overthinking coordinate geometry. If this hits your live assessment and you blank on the approach, StealthCoder surfaces the working solution in seconds, invisible to the proctor. It's the hedge for the one pattern you didn't drill.
Companies that ask "Rectangle Area"
Rectangle Area is the kind of problem that decides whether you pass. StealthCoder reads the problem on screen and surfaces a working solution in under 2 seconds. Invisible to screen share. The proctor sees nothing. Made for the engineer who has done the work but might still blank with a webcam pointed at him.
Get StealthCoderThe core of Rectangle Area is calculating the overlap (intersection) of two rectangles on a 2D plane. Candidates often jump to object-oriented design or try to iterate over coordinates, burning time on boilerplate. The real solution is math: compute the width and height of the overlapping region by comparing the boundaries, then multiply. If either dimension is zero or negative, the area is zero. The pattern uses interval overlap logic applied twice, once for each axis. This shows up in geometry, coordinate compression, and sweep-line problems. StealthCoder is the safety net when the visualization fails during the live OA and you can't visualize how two rectangles actually overlap.
Pattern tags
You know the problem.
Make sure you actually pass it.
Rectangle Area recycles across companies for a reason. It's medium-tier, and most candidates blank under the timer. StealthCoder is the hedge: an AI overlay invisible during screen share. It reads the problem and surfaces a working solution in under 2 seconds. Made for the engineer who has done the work but might still blank with a webcam pointed at him. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Rectangle Area interview FAQ
Why is Rectangle Area 47% acceptance and not harder?+
The math is straightforward, but implementation errors are common. Most failures come from off-by-one mistakes, not understanding the overlap logic, or overcomplicating the solution. Once you see the interval overlap pattern, it clicks. That 47% reflects careless mistakes more than conceptual difficulty.
Is this still asked at Google and Nvidia?+
Yes. Both companies report asking it. It's a quick filter for whether candidates can spot when a problem is math rather than algorithm. It's not a barometer of deep coding skill, but getting it wrong signals sloppy thinking, which hurts during live assessments.
What's the trick to Rectangle Area?+
Recognize that overlap is an interval problem on two independent axes. Calculate the horizontal overlap and vertical overlap separately as width and height, then multiply. If either is zero or negative, return zero. That's it. No loops, no objects, just math.
How does Rectangle Area relate to geometry and coordinate problems?+
It's the foundation for coordinate geometry filtering. Once you master interval overlap, you unlock sweep-line algorithms, 2D range queries, and collision detection. Many harder geometry problems reuse this same pattern at their core.
Should I memorize the formula or derive it live?+
Derive it live in 30 seconds. Write out what overlap means on one axis, then apply it to both axes. That shows confidence and clarity. Memorization fails when the problem mutates. Deriving on the fly signals you own the concept.
Want the actual problem statement? View "Rectangle Area" on LeetCode →