add leetcode problem-cn part2

算法题（国内版）/problem (English)/零矩阵(English) [zero-matrix-lcci].html

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+<p>Write an algorithm such that if an element in an MxN matrix is 0, its entire row and column are set to 0.</p>
+
+<p>&nbsp;</p>
+
+<p><strong>Example 1: </strong></p>
+
+<pre>
+<strong>Input: </strong>
+[
+  [1,1,1],
+  [1,0,1],
+  [1,1,1]
+]
+<strong>Output: </strong>
+[
+  [1,0,1],
+  [0,0,0],
+  [1,0,1]
+]
+</pre>
+
+<p><strong>Example 2: </strong></p>
+
+<pre>
+<strong>Input: </strong>
+[
+  [0,1,2,0],
+  [3,4,5,2],
+  [1,3,1,5]
+]
+<strong>Output: </strong>
+[
+  [0,0,0,0],
+  [0,4,5,0],
+  [0,3,1,0]
+]
+</pre>