ChopsticksTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2002 Accepted Submission(s): 944Problem DescriptionIn China, people use a p
#找出数组中只出现一次的数def findOnce(array): if array==None: return 0 length=len(array) dic=dict() for i in range(length): if array[i] in dic: dic[array[i]]=0 else: dic[array[i]]=1 for key,value in