Python Program to Add Two Matrices.

• Both matrices must have the same number of rows and columns.
• If matrix A has dimensions m x n (m rows and n columns), matrix B must also have dimensions m x n.

# Python Code for Matrix Addition
def add_matrices(matrix1, matrix2):
    # Check if matrices have the same dimensions
    if len(matrix1) != len(matrix2) or len(matrix1[0]) != len(matrix2[0]):
        return "Matrices should have the same dimensions for addition"

    result = []
    for i in range(len(matrix1)):
        row = []
        for j in range(len(matrix1[0])):
            row.append(matrix1[i][j] + matrix2[i][j])
        result.append(row)
    return result

# Example matrices for addition
matrix_A = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
]

matrix_B = [
    [9, 8, 7],
    [6, 5, 4],
    [3, 2, 1]
]

# Calling the function to add matrices
resultant_matrix = add_matrices(matrix_A, matrix_B)
print("Resultant Matrix after Addition:")
for row in resultant_matrix:
    print(row)

Resultant Matrix after Addition:
[10, 10, 10]
[10, 10, 10]
[10, 10, 10]

• Time Complexity: O(m x n)
• Space Complexity: O(m x n)