Single Number

gistfile1.txt

//write by myself
func singleNumber(nums []int) int {
    temp :=map[int]int{}
    var single int
    for _ , n := range nums {
        if _, ok := temp[n] ; ok {
            temp[n] = temp[n]+1
        } else {
            temp[n] =0
        }
    }
    for  k,v := range temp{
        if v== 0 {
            single = k
        }
    }
    return  single
}