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Given a matrix of N x n, find the matrix after 90 degrees of rotation
20220202 11:47:42 【CSDN Q & A】
First enter a n ( n ≤ 10 ) , then n That's ok n Column The data represents a matrix , The output matrix rotates clockwise 90 Matrix after degree . When there is no input , Program end .
Refer to the answer 1：
#include <iostream>#include <vector>int main(){ int n; std::cin >> n; if (n <= 0) { std::cout << "invalid matrix size\n"; return 1; } int size = n * n; std::vector<float> A(size); for (int i = 0; i < size; i++) std::cin >> A[i]; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { std::cout << A[(n  j  1 )* n + i] << ' '; } std::cout << '\n'; } return 0;}
Refer to the answer 2：
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