22 lines
396 B
Markdown
Executable File
22 lines
396 B
Markdown
Executable File
Given an integer n, return true if it is a power of three. Otherwise, return false.
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An integer n is a power of three, if there exists an integer x such that n == 3x.
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Example 1:
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Input: n = 27
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Output: true
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Explanation: 27 = 33
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Example 2:
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Input: n = 0
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Output: false
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Explanation: There is no x where 3x = 0.
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Example 3:
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Input: n = -1
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Output: false
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Explanation: There is no x where 3x = (-1).
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