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Arrays and Intervals

Alex Chen40 min readUpdated

Array questions at Palo Alto Networks show up in several kinds of rounds: a first technical round for an associate engineer, campus loops, a senior onsite in New York and a HackerRank online assessment.

One is different. It's the only one where you build a class, so state carries over between calls. Each of the four has a brute force that passes small tests, and interviewers usually follow up with a question about cost, so have the faster version ready before you walk in. One of them is a Hard, so give it extra practice time.

Palo Alto NetworksPremium lesson · Coding round

The 4 Palo Alto Networks problems are below.

  1. A Premium questionCoding · Hard
  2. A Premium questionCoding · Medium
  3. A Premium questionCoding · Medium

+ 1 more in this lesson

Each with hints, the follow-up and a tested solution.

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