#算法

2 篇

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Dec 2, 2025

953

Derivation of DFT and FFT

A derivation note for the Discrete Fourier Transform (DFT), the Fast Fourier Transform (FFT), and a short introduction to the FFTW library.

Nov 22, 2025

2.2K

用游戏排行榜的例子解释红黑树：从二叉搜索树到平衡树，再到旋转、变色和插入删除规则。