# 定义一个列表，包含元素：1,2,3,4,5,6,7,8,9,10，把是偶数的元素放入一个新列表中

# 定义一个列表，包含元素：1,2,3,4,5,6,7,8,9,10
# 把是偶数的元素放入一个新列表中
mylist = [1,2,3,4,5,6,7,8,9,10]
index = 0
youlist = []
while index<len(mylist):
    num = mylist[index]
    if num % 2 == 0:
        youlist.append(num)
    index += 1
print(youlist)



# for循环实现
mylist = [1,2,3,4,5,6,7,8,9,10]
ylist = []
for i in mylist:
    if i % 2 == 0:
        ylist.append(i)
print(youlist)