1.數(shù)組求并集

#python3
class Bing:
    def bing(self,arr1,arr2):
        #按下標(biāo)索引
        for i in range(len(arr2)):
            if arr2[i] not in arr1:
                arr1.append(arr2[i])
        arr1.sort()
        print(arr1)
        #return arr1
he=Bing()
he.bing([1,3,5,7,9],[0,2,4,6,8,10])

class Bing:
    def bing(self,arr1,arr2):
        #按元素索引
        for i in arr2:
            if i not in arr1:
                arr1.append(i)
        arr1.sort()
        print(arr1)
        #return arr1
he=Bing()
he.bing([1,3,5,7,9],[0,2,4,6,8,10])

二維數(shù)組的轉(zhuǎn)換

#python3
#生成2維列表
a=list([i+5*j for i in range(1,6)]for j in range(4))
#打印列表a
print(a)
#換行打印
for i in a:
    print(i)
#翻轉(zhuǎn)
b=list([n[m]for n in a]for m in range(5))
#打印列表b
print(b)
#換行打印
for i in b:
    print(i)
#3
c=list(i for i in range(50)if i%5==0 )
#打印列表c
print(c)
#打印列表c，每行3個(gè)元素
for i in range(len(c)):
    if (i+1)%3==0:
        print(c[i])
    else:
        print(c[i],end=",")