// Package q693 implements a solution for https://leetcode.com/problems/binary-number-with-alternating-bits/
package q693

func hasAlternatingBits(n int) bool {
	last := -1
	for n > 0 {
		if last == n%2 {
			return false
		}
		last = n % 2
		n >>= 1
	}
	return true
}

var _ = hasAlternatingBits