FFT

1

https://www.cnblogs.com/pks-t/p/9251147.html

2

https://blog.csdn.net/WADuan2/article/details/79529900?utm_medium=distribute.pc_relevant.none-task-blog-searchFromBaidu-4.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-searchFromBaidu-4.control

3

https://www.cnblogs.com/qiyueliu/p/11237318.html

keywords：点值表示法 recursive 迭代法 polynomial