edit 531

Author: fishercoder1534

Diff for: README.md

@@ -96,7 +96,7 @@ Your ideas/fixes/algorithms are more than welcome!
 |535|[Encode and Decode TinyURL](https://leetcode.com/problems/encode-and-decode-tinyurl/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_535.java) | O(1) |O(n) | Medium | Design
 |533|[Lonely Pixel II](https://leetcode.com/problems/lonely-pixel-ii/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_533.java) | O(m*n) |O(m) (m is number of rows) | Medium | HashMap
 |532|[K-diff Pairs in an Array](https://leetcode.com/problems/k-diff-pairs-in-an-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/KdiffPairsinanArray.java) | O(n) |O(n) | Easy | HashMap
-|531|[Lonely Pixel I](https://leetcode.com/problems/lonely-pixel-i/)|[Solution](../master/src/main/java/com/fishercoder/solutions/LonelyPixelI.java) | O(m*n) |O(1) | Medium | 
+|531|[Lonely Pixel I](https://leetcode.com/problems/lonely-pixel-i/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_531.java) | O(m*n) |O(1) | Medium | 
 |530|[Minimum Absolute Difference in BST](https://leetcode.com/problems/minimum-absolute-difference-in-bst/)|[Solution](../master/src/main/java/com/fishercoder/solutions/MinimumAbsoluteDifferenceinBST.java) | O(n) |O(n) | Easy| DFS
 |529|[Minesweeper](https://leetcode.com/problems/minesweeper/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_529.java) | O(m*n) |O(k) | Medium | BFS
 |526|[Beautiful Arrangement](https://leetcode.com/problems/beautiful-arrangement/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_526.java) | O(n) |O(h) | Medium | Backtracking

Diff for: src/main/java/com/fishercoder/solutions/LonelyPixelI.java renamed to src/main/java/com/fishercoder/solutions/_531.java

@@ -18,7 +18,7 @@
  Note:
  The range of width and height of the input 2D array is [1,500].
  */
-public class LonelyPixelI {
+public class _531 {
 
     public int findLonelyPixel(char[][] picture) {
         int m = picture.length;