这个有点像DSP FPGA Chang Choo的题目，一般是放大插值，DFT，IIR之类的Verilog题目。 题目在这：Given an image represented by an NxN matrix, where each pixel in the image is 4 bytes, write a method to rotate the image by 90 degrees. Can you do this in place? //https://github.com/monish001/CPP-Programs/blob/master/CTCI/1.6MatrixRotateBy90.cpp //MatrixRotate90.cpp #include using namespace std; void swap(char &a, char &b){ char t = a; a = b; b = t; } void rotate(char** a, int n){ for (int i=0; i
注意，这里的循环基和index需要留心注意。 关于index的选择，可以参考这个草图：