Add recursive matrix multiplication function

multiply.py

@@ -0,0 +1,31 @@
+def matrix_multiply_recursive(A, B):
+    # check if matrices can be multiplied
+    if len(A[0]) != len(B):
+        raise ValueError("Invalid matrix dimensions")
+
+    # initialize result matrix with zeros
+    result = [[0 for j in range(len(B[0]))] for i in range(len(A))]
+
+    # recursive multiplication of matrices
+    def multiply(A, B, result, i, j, k):
+        if i >= len(A):
+            return
+        if j >= len(B[0]):
+            return multiply(A, B, result, i+1, 0, 0)
+        if k >= len(B):
+            return multiply(A, B, result, i, j+1, 0)
+        result[i][j] += A[i][k] * B[k][j]
+        multiply(A, B, result, i, j, k+1)
+
+    # perform matrix multiplication
+    multiply(A, B, result, 0, 0, 0)
+    return result
+
+
+# example usage
+A = [[12, 7, 3], [4, 5, 6], [7, 8, 9]]
+B = [[5, 8, 1, 2], [6, 7, 3, 0], [4, 5, 9, 1]]
+
+result = matrix_multiply_recursive(A, B)
+for row in result:
+    print(row)