8.7)

x = [1,2,3,4]
    # 0,1,2,3

num_elements = len(x)
print(num_elements)



x = [3,2,4,1]
x = ["라","나","가","다"]
x = ['라', '나', '가', '다']

y = sorted(x)
print(y)


x = [3,2,4,1]
y = sum(x)
print(y)