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Grokking the Coding Interview Patterns

Gas Station

Explore how to solve the Gas Station problem by applying greedy algorithm techniques. Understand how to determine the unique starting point that enables a car to complete a circuit by collecting and consuming gas efficiently along a circular route. Practice identifying problem constraints and develop skills to implement solutions with optimal time and space tradeoffs.

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Statement

There are nn gas stations along a circular route, where the amount of gas at the ithi^{th} station is gas[i].

We have a car with an unlimited gas tank, and it costs cost[i] of gas to travel from the  ...