Transpose Matrix Problem & Solution
Given a 2D integer array matrix, return the transpose of matrix.
The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices.
See the transpose-matrix problem on LeetCode.
C++ Solution
#pragma GCC optimize("Ofast")
#pragma GCC optimization("unroll-loops")
static const int _=[](){std::ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);return 0;}();
class Solution {
public:
vector<vector<int>> transpose(vector<vector<int>>& matrix) {
int m = matrix.size();
int n = matrix[0].size();
vector<vector<int>> transposed(n, vector<int>(m, 0));
for (int i = 0; i < m; ++i) {
for (int j = 0; j < n; ++j) {
transposed[j][i] = matrix[i][j];
}
}
return transposed;
}
};