Leetcode Note: Go - Find Closest Number to Zero

func findClosestNumber(nums []int) int {
    closestNumber := -math.MaxInt
    closestAbsNumber := math.MaxInt

    for _, num := range nums {
        diff := int(math.Abs(float64(num)))

        if diff < closestAbsNumber {
            closestAbsNumber = diff
            closestNumber = num
        } else if diff == closestAbsNumber {
            closestNumber = max(closestNumber, num)
        }
    }

    return closestNumber
}


// max returns larger digit
func max(num1, num2 int) int {
    if num1 < num2 {
        return num2
    }

    return num1
}