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Solution: Gas Station

Understand the greedy technique to solve the gas station problem by determining the start index from which a car can complete a circular route. Learn to optimize the solution using a single pass approach that balances gas and cost arrays, improving time complexity to linear.

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} ...