class Solution: def FindNumsAppearOnce(self , array ): a={} b=[] for i in array: if i in a: a[i]+=1 else: a[i]=1 for i in a: if a[i]==1: b.append(i) return b
class Solution: def FindNumsAppearOnce(self , array ): a={} b=[] for i in array: if i in a: a[i]+=1 else: a[i]=1 for i in a: if a[i]==1: b.append(i) return b