#633Easy· asked at 4 companies
First Bad Version
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What we know
Example 1
Input: n = 5, bad = 4 Output: 4
isBadVersion(3) is false, isBadVersion(4) is true.
Example 2
Input: n = 1, bad = 1 Output: 1
Constraints
- •
1 <= bad <= n <= 2^31 - 1 - •
isBadVersion(version)may be called multiple times, but each call is expensive.