package arrays

func Sum(a []int) int {
	sum := 0

	//aternatively
	// for i := 0; i < 5; i++ {
	// 	sum += a[i]
	// }

	// OR

	// for i := range a {
	// 	sum += a[i]
	// }

	// OR

	for _, v := range a {
		sum += v
	}
	return sum
}

// The ... in the method signature means it's  variadic function
// meaning it takes a variable number of arguments

// SumAll
func SumAll(numbersToSum ...[]int) []int {
	return nil
}