python 倒序遍历list python倒序遍历

a = [1,3,6,8,9]
print("通过下标逆序遍历1：")
for i in a[::-1]:
    print(i, end=" ")
print("\n通过下标逆序遍历2：")
for i in range(len(a)-1,-1,-1):
    print(a[i], end=" ")
print("\n通过reversed逆序遍历：")
for i in reversed(a):
    print(i, end=" ")