选择排序（简单版）（LOW）
# _*_coding:utf-8_*_
def select_sort_simple(li):
li_new = []
for i in range(len(li)):
min_val = min(li)
li_new.append(min_val)
li.remove(min_val)
return li_new
li = [3,4,2,1,5,6,8,7,9]
print(li)
select_sort_simple(li)