Thumbtack Interview Question: There are multiple services i... | Glassdoor

Interview Question

Software Engineer Interview San Francisco, CA

There are multiple services in Thumbtack. Some services

  couldn't be triggered until service or service(s) existed. Given an arrangement of services, write down code to check if it's legal. For example, if service C must came after service A&B, then A ->C ->B is not a legal, while A ->B ->C or B ->A ->C is legal.
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