Greedy Algorithms pattern
Gas Station
Given gas available at each station along a circular route and the cost to travel from each station to the next, return the starting station index from which you can complete the full loop, or -1 if no such start exists. A unique answer is guaranteed when one exists. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 134
- Medium
- 1 approach
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Greedy AlgorithmsLeetCode 134
Medium
The approach
- 01 Greedy · one pass, reset start past each failure O(n)O(1) space
What you will learn
- How to read Gas Station and spot the greedy algorithms pattern in it
- Greedy · one pass, reset start past each failure: O(n) time, O(1) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Greedy Algorithms
See Gas Station run, step by step
Sign in and this page opens on the animation, with all 5 Greedy Algorithms problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.