Leetcode Note: Go - Summary Ranges

func summaryRanges(nums []int) []string {
    if len(nums) == 0 {
        return nil
    }

    var summaryRanges []string
    var head int = 0
    
    for i := range nums {
        if (i < len(nums)-1 && nums[i]+1 == nums[i+1]) {
            continue
        }

        if head == i {
            summaryRanges = append(summaryRanges, strconv.Itoa(nums[i]))
        } else {
            tmp := strconv.Itoa(nums[head]) + "->" + strconv.Itoa(nums[i])
            summaryRanges = append(summaryRanges, tmp)
        }

        head = i + 1
    }

    return summaryRanges
}