UNISERVO1/power_of_four.kt

## power_of_four.kt

class Solution {
    val mask: Int = (0..31 step 2).fold(0){ acc, v -> acc + (1 shl v)}

    fun isPowerOfFour(num: Int): Boolean {
        return (num - 1) and num == 0 && (mask and num) > 0
    }
}

	class Solution {
	val mask: Int = (0..31 step 2).fold(0){ acc, v -> acc + (1 shl v)}

	fun isPowerOfFour(num: Int): Boolean {
	return (num - 1) and num == 0 && (mask and num) > 0
	}
	}