摘要:
class Singleton(object): def __new__(cls,*args,**kwargs): if not hasattr(cls,'_inst'): cls._inst=super(Singleton,cls).__new__(cls,*args,**kwargs) retu 阅读全文
摘要:
a=[21,9,3,5,12,10,1,13,15]for i in range(len(a)-1,-1,-1): #print (i) for j in range(i): #print (j) if a[j] > a[j+1]: a[j],a[j+1]= a[j+1],a[j] #print ( 阅读全文