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class Solution { public: void rotate(vector<vector<int>>& matrix) { cin.tie(nullptr)->sync_with_stdio(0); int n = matrix.size(); for (int i = 0; i < n - 1; i++) { for (int j = i + 1; j < n; j++) { swap(matrix[i][j], matrix[j][i]); } } for (int i = 0; i < n; i++) { reverse(matrix[i].begin(), end(matrix[i])); } } };
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