Create a function to get digits pow
func isHappy(n int) bool {
set := map[int]bool{}
for n!=1 && !set[n] {
n, set[n] = GetSum(n), true
}
return n == 1
}
func GetSum(n int) int {
var sum int
for n > 0 {
sum += (n % 10) * (n % 10)
n = n / 10
}
return sum
}