Matrix subtraction

Problem to subtract the given two matrix.

Example-1:

Input    : n1 = [[4,3],[2,1]]  n2 = [[1,1],[1,1]]
Output   : [[3, 2], [1, 0]]

Example-2:

Input    : n1 = [[1,2,3],[4,5,6],[7,8,9]]  n2 = [[9,8,7],[6,5,4],[3,2,1]]
Output   : [[-8, -6, -4], [-2, 0, 2], [4, 6, 8]]

Solution

n1 = [[4,3],[2,1]]

n2 = [[1,1],[1,1]]

c = []

for i in range(len(n1)):

    k = []

    for j in range(len(n2)):

        k.append(0)

    c.append(k)

for x in range(len(n1)):

    for y in range(len(n2)):

        c[x][y] = n1[x][y] - n2[x][y]
        
print(c)

Output

[[3, 2], [1, 0]]