20 lines
258 B
Go
20 lines
258 B
Go
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package main
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func isBadVersion(version int) bool
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// Time: O(log(n))
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// Space: O(1)
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func firstBadVersion(n int) int {
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move := 0
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for n > 1 {
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p := n / 2
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if isBadVersion(move + p) {
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n = p
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} else {
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n = n - p
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move += p
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}
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}
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return move + n
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}
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