一、滤波器的作用 滤波器在信号处理中用于移除或减少信号中的噪声,同时保持信号的某些特性。滤波器通常用于音频、视频和图像处理等领域。滤波器根据其 designed for different purposes and can be divided into several types, such as lowpass filters, highpass…
题目链接
E - Random Swaps of Balls (atcoder.jp)
Statements
Problem Statement
There are N − 1 N - 1 N−1 white balls and one black ball. These N N N balls are arranged in a row, with the black ball initially at the leftmost position.
Takahashi will …