A------------------------------------------------------------------------------------ 题目链接:http://202.197.224.59/OnlineJudge2/index.php/problem/read/id/1260 题解:随机 n 个数把矩阵补全成 n × n 的.那么就是要算伴随矩阵的第一行,也就是逆矩阵的第一列,高斯消元即可. 源码:(Q神写的高斯消元,先贴一下诶,待补) #include<cs
原题链接 http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1809 Description Bobo has a balanced parenthesis sequence P=p1 p2…pn of length n and q questions. The i-th question is whether P remains balanced after pai and pbi swapped. Note that questions ar
http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2877 题目描述 The problems called "Angry Birds" and "Angry Birds Again and Again" has been solved by many teams in the series of contest in 2011 Multi-University Tr
2020年TI杯大学生电子设计竞赛E题总结(放大器非线性失真研究装置) 摘要:E题的竞赛内容主要是参赛者自己搭建一个晶体管放大器,能够产生不失真.顶部失真.底部失真.双向失真和交越失真五种波形,并分别测量这五种波形的总谐波失真值(THD = Total Harmonic Distortion).要设计这样一个非线性失真研究装置,首先用两级共射放大电路组成晶体管放大器,采用开关控制偏置电阻的切换产生五种波形,输出端通过STM32核心板对输出信号进行采样.FFT(Fast Fourier Trans