Take Matrix input from user in Python
Matrix is nothing but a rectangular arrangement of data or numbers. In other words, it is a rectangular array of data or numbers. The horizontal entries in a matrix are called as ‘rows’ while the vertical entries are called as ‘columns’. If a matrix has r number of rows and c number of columns then the order of matrix is given by r x c. Each entries in a matrix can be integer values, or floating values, or even it can be complex numbers.
// 3 x 4 matrix 1 2 3 4 M = 4 5 6 7 6 7 8 9 // 2 x 3 matrix in Python A = ( [ 2, 5, 7 ], [ 4, 7, 9 ] ) // 3 x 4 matrix in Python where entries are floating numbers B = ( [ 1.0, 3.5, 5.4, 7.9 ], [ 9.0, 2.5, 4.2, 3.6 ], [ 1.5, 3.2, 1.6, 6.5 ] )
In Python, we can take a user input matrix in different ways. Some of the methods for user input matrix in Python are shown below:
Enter the number of rows:2 Enter the number of columns:3 Enter the entries rowwise: 1 2 3 4 5 6 1 2 3 4 5 6
Time complexity: O(RC)
Auxiliary space: O(RC)
Code #2: Using map() function and Numpy. In Python, there exists a popular library called NumPy. This library is a fundamental library for any scientific computation. It is also used for multidimensional arrays and as we know matrix is a rectangular array, we will use this library for user input matrix.
Enter the number of rows:2 Enter the number of columns:2 Enter the entries in a single line separated by space: 1 2 3 1 [[1 2] [3 1]]
Time complexity: O(RC), as the code iterates through RC elements to create the matrix.
Auxiliary space: O(RC), as the code creates an RC sized matrix to store the entries.
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