Brute force checks every pair: . Here's the idea: start with the widest container (pointers at both ends). The only way to get a larger area is to find taller lines. Moving the taller pointer can only decrease the width without guaranteeing a height increase. So always move the shorter pointer inward. You might find a taller line that compensates for the decreased width.
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$ curl repovive.com/roadmaps/maang-interview-prep/two-pointers-sliding-window/container-with-most-water-hint
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