package q238

func productExceptSelf(nums []int) []int {
	ret := make([]int, len(nums))

	// from left
	t := 1
	for i := range len(nums) - 1 {
		t *= nums[i]
		ret[i+1] = t
	}
	ret[0] = 1

	// from right
	t = 1
	for i := len(nums) - 1; i > 0; i-- {
		t *= nums[i]
		ret[i-1] *= t
	}

	return ret
}

var _ = productExceptSelf