Write an algorithm such that if an element in an MxN matrix is 0, its entire row and column are set to 0.

Example 1:

Input: 

[

  [1,1,1],

  [1,0,1],

  [1,1,1]

]

Output: 

[

  [1,0,1],

  [0,0,0],

  [1,0,1]

]

Example 2:

Input: 

[

  [0,1,2,0],

  [3,4,5,2],

  [1,3,1,5]

]

Output: 

[

  [0,0,0,0],

  [0,4,5,0],

  [0,3,1,0]

]