Jan.3th,2020
#迭代求和
def list_sum(num_list):
the_sum = 0
for i in num_list:
the_sum = the_sum + i
return the_sum
print(list_sum([1, 3, 5, 7, 9]))
def list_sum(num_list):
if len(num_list) == 1:
return num_list[0]
else:
return num_list[0] + list_sum(num_list[1:])
print(list_sum([1, 3, 5, 7, 9]))