Golang Leetcode 238. Product of Array Except Self.go

func productExceptSelf(nums []int) []int {
	ret := make([]int, len(nums))
	for k := range ret {
		ret[k] = 1
	}
	tmp := 1
	for i := 1; i < len(nums); i++ {
		ret[i] = ret[i-1] * nums[i-1]
	}
	for i := len(nums) - 1; i >= 0; i-- {
		ret[i] = ret[i] * tmp
		tmp *= nums[i]
	}
	return ret
}