10. first bad version

JavaScriptAlgorithm
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Say you have multiple versions of a program, write a program that will find and return the first bad revision given a isBad(version) function.

Versions after first bad version are supposed to be all bad versions.

notes

  1. Inputs are all non-negative integers
  2. if none found, return -1

Let's try to solve this problem within 10 minutes.

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