小编jr1*_*100的帖子

age = [19, 20, 21, 22, 23, 24, 25]
frequency = [2, 1, 1, 3, 2, 1, 1]
output_age = [19, 19, 20, 21, 22, 22, 22, 23, 23, 24, 25]

我们如何创建一个新列表，将一个列表中的项目多次添加到另一个列表中？

谢谢