给定一个列表list1 =
[6,9,12,3,5,8,1,8,131,58,1,581,31,8,46,13,8,4,613,30,546,0,68,4,1,3,16,99,61,-102,-
290,116.5,165,-2.3]，使用 for 循环来复制它，对复制后的列表进行倒序排序。
list1 =[6,9,12,3,5,8,1,8,131,58,1,581,31,8,46,13,8,4,613,30,546,0,68,4,1,3,16,99,61,-102,-290,116.5,165,-2.3]
listCopy=[]
for i in range(len(list1)):
listCopy.append(list1[i])
listCopy.sort(reverse= True)
print(listCopy)
"""--result
[613, 581, 546, 165, 131, 116.5, 99, 68, 61, 58, 46, 31, 30, 16, 13, 12, 9, 8, 8, 8, 8, 6, 5, 4, 4, 3, 3, 1, 1, 1, 0, -2.3, -102, -290]
"""