12 lines
		
	
	
		
			250 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			12 lines
		
	
	
		
			250 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| #include <Eigen/Core>
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| #include <iostream>
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| 
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| int main() {
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|   int const N = 5;
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|   Eigen::MatrixXi A(N, N);
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|   A.setRandom();
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|   std::cout << "A =\n" << A << '\n' << std::endl;
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|   std::cout << "A(1..3,:) =\n" << A.middleRows<3>(1) << std::endl;
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|   return 0;
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| }
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