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21 lines
329 B
21 lines
329 B
package main |
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import ( |
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"fmt" |
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"os" |
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"strconv" |
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) |
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func main() { |
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if len(os.Args) > 2 || len(os.Args) < 2 { |
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fmt.Println() |
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return |
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} |
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nbr, _ := strconv.Atoi(os.Args[1]) |
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fmt.Println(isPowerOf2(nbr)) |
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} |
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//& computes the logical bitwise AND of its operands. |
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func isPowerOf2(n int) bool { |
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return n != 0 && ((n & (n - 1)) == 0) |
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}
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