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class Solution {
func isPowerOfTwo(_ n: Int) -> Bool {
        var temp = 1
        while (temp < n)
        {
            temp *= 2
        }
        return temp == n        //n์ ๊น์ง temp์ 2๋ฅผ ๊ณฑํ๊ณ  true ํน์ false ๋ฐํ
    }
}
C++
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