#Python05_10_CollectionList07_신동혁
a=['a','b','c']
a.reverse()
print(a)
print('-'*20)

#위치 반환(index)
a=['a','c','b']
print(a.index('b'))
print('-'*20)

a=[1,2,3]
a.insert(0,4)
print(a)
a.insert(3,5)
print(a)
print('-'*20)