solves #2810: Faulty Keyboard in java

Author: anishLearnsToCode

Diff for: README.txt

@@ -843,4 +843,4 @@
 | 2788 | [Split Strings by Separator](https://leetcode.com/problems/split-strings-by-separator)                                                                                 |                                                                                   [![Java](assets/java.png)](src/SplitStringsBySeparator.java)                                                                                                                                               |                                                                                                                                   |
 | 2798 | [Number of Employees Who Met the Target](https://leetcode.com/problems/number-of-employees-who-met-the-target)                                                         |                                                                                   [![Java](assets/java.png)](src/NumberOfEmployeesWhoMetTheTarget.java)                                                                                                                                               |                                                                                                                                   |
 | 2806 | [Account Balance After Rounded Purchase](https://leetcode.com/problems/account-balance-after-rounded-purchase)                                                         |                                                                                   [![Java](assets/java.png)](src/AccountBalanceAfterRoundedPurchase.java)                                                                                                                                               |                                                                                                                                   |
-| 2810 | [Faulty Keyboard](https://leetcode.com/problems/faulty-keyboard)                                                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2810 | [Faulty Keyboard](https://leetcode.com/problems/faulty-keyboard)                                                                                                       |                                                                                   [![Java](assets/java.png)](src/FaultyKeyboard.java)                                                                                                                                               |                                                                                                                                   |

Diff for: src/FaultyKeyboard.java

@@ -0,0 +1,18 @@
+// https://leetcode.com/problems/faulty-keyboard
+// T: O(N^2)
+// S: O(N)
+
+public class FaultyKeyboard {
+    public String finalString(String s) {
+        final StringBuilder stringBuilder = new StringBuilder();
+        for (int i = 0 ; i < s.length() ; i++) {
+            char character = s.charAt(i);
+            if (character == 'i') {
+                stringBuilder.reverse();
+            } else {
+                stringBuilder.append(character);
+            }
+        }
+        return stringBuilder.toString();
+    }
+}