73.set matrix zeroes (#72)

* Added 73. Set Matrix Zeroes (Java)

* Updated Readme Added 73. SetMatrixZeroes Java

Author: PranayChauhan2516

Java/set-matrix-zeroes.java

@@ -0,0 +1,34 @@
+class Solution {
+  public void setZeroes(int[][] matrix) {
+    Boolean isCol = false;
+    int R = matrix.length, C = matrix[0].length;
+    for (int i = 0; i < R; i++) {
+      if (matrix[i][0] == 0) {
+        isCol = true;
+      }
+      for (int j = 1; j < C; j++) {
+        if (matrix[i][j] == 0) {
+          matrix[0][j] = 0;
+          matrix[i][0] = 0;
+        }
+      }
+    }
+    for (int i = 1; i < R; i++) {
+      for (int j = 1; j < C; j++) {
+        if (matrix[i][0] == 0 || matrix[0][j] == 0) {
+          matrix[i][j] = 0;
+        }
+      }
+    }
+    if (matrix[0][0] == 0) {
+      for (int j = 0; j < C; j++) {
+        matrix[0][j] = 0;
+      }
+    }
+    if (isCol) {
+      for (int i = 0; i < R; i++) {
+        matrix[i][0] = 0;
+      }
+    }
+  }
+}

README.md

@@ -105,6 +105,7 @@ Check out ---> [Sample PR](https://github.com/codedecks-in/LeetCode-Solutions/pu
 | 1200 | [Minimum Absolute Difference](https://leetcode.com/problems/minimum-absolute-difference/) | [Python](./python/SmallestDifference.py) | O(n) | O(1) | Easy | Array | 
 | 532 | [K-diff Pairs in an Array](https://leetcode.com/problems/k-diff-pairs-in-an-array/) | [C++](./C++/k-diff-pairs-in-an-array.cpp) | O(n) | O(n) | Medium | Array | 
 | 152 | [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/) | [Javascript](./JavaScript/152.Maximum-Product-Subarray.js) | O(n) | O(n) | Medium | Array | 
+| 073 | [Set-Matrix-Zeroes](https://leetcode.com/problems/set-matrix-zeroes/) | [Java](./Java/set-matrix-zeroes.java) | O(MN) | O(1) | Medium | Array | 
 
 
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