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Kronecker Product
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Given a n*m matrix A and a p*q matrix B, their Kronecker product C = A tensor B, also called their matrix direct product, is an (np)*(mq) matrix.
A tensor B
=
|a11B    a12B|            
|a21B    a22B|
=   
|a11b11    a11b12    a12b11    a12b12|
|a11b21    a11b22    a12b21    a12b22|
|a11b31    a11b32    a12b31    a12b32|
|a21b11    a21b12    a22b11    a22b12|
|a21b21    a21b22    a22b21    a22b22|
|a21b31    a21b32    a22b31    a22b32|

 

Example 1:

Input: 
n = 2, m = 2 
p = 2, q = 2
A = {{1, 2}, 
     {3, 4}}
B = {{0, 5}, 
     {6, 7}}
Output: {{0, 5, 0, 10}, 
         {6, 7, 12, 14}, 
         {0, 15, 0, 20}, 
         {18, 21, 24, 28}}
Explaination: If the multiplication process 
is followed then this will be the answer.

 

Your Task:
You do not need to read input or print anything. Your task is to complete the function kroneckerProduct() which takes n, m, p, q and A and B as input parameters and returns the resultant matrix.

 

Expected Time Complexity: O(n*m*p*q)
Expected Auxiliary Space: O(n*m*p*q)

 

Constraints:
1 ≤ n, m, p, q ≤ 20
1 ≤ A[i][j], B[i][j] ≤ 100 

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Kronecker Product

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