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Solution: Gas Station

Explore the Gas Station problem and understand how to apply greedy techniques to find a valid starting gas station in a circular route. Learn to evaluate feasibility based on gas and travel cost, efficiently track gas availability, and achieve an O(n) solution that determines if a round trip is possible.

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 ithi^{th} station to the next (i+1)th(i+1)^{th} ...