Set Matrix Zero

/**
	 * Write an algorithm such that if an element in an MxN matrix is 0,
its
	 * entire row and column are set to 0.
	 * 
	 * */
	
	/**
	 * Input:
	 * 
	 *   1 2 1 0
	 *   0 2 3 2
	 *   1 2 3 2
	 * 
	 * Output:
	 * 
	 *   0 0 0 0
	 *   0 0 0 0
	 *   0 2 3 0
	 *   
	 * */