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v1.6.5
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Published: Mar 23, 2021
License: MIT
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README
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Given an integer n
, return true
if it is a power of four. Otherwise, return false
.
An integer n
is a power of four, if there exists an integer x
such that n == 4x
.
Example 1:
Input: n = 16
Output: true
Example 2:
Input: n = 5
Output: false
Example 3:
Input: n = 1
Output: true
Constraints:
Follow up: Could you solve it without loops/recursion?
[Bit Manipulation]
Similar Questions
- Power of Two (Easy)
- Power of Three (Easy)
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