solves #2460: Apply Operations to an Array in java

Author: anishLearnsToCode

README.md

@@ -777,7 +777,7 @@
 | 2446 | [Determine if Two Events Have Conflict](https://leetcode.com/problems/determine-if-two-events-have-conflict)                                                           |                                                                              [![Java](assets/java.png)](src/DetermineIfTwoEventsHaveConflict.java)                                                                               |                                                                                                                                   |
 | 2451 | [Odd String Difference](https://leetcode.com/problems/odd-string-difference)                                                                                           |                                                                                     [![Java](assets/java.png)](src/OddStringDifference.java)                                                                                     |                                                                                                                                   |
 | 2455 | [Average Value of Even Numbers That Are Divisible by Three](https://leetcode.com/problems/average-value-of-even-numbers-that-are-divisible-by-three)                   |                                                                      [![Java](assets/java.png)](src/AverageValueOfEvenNumbersThatAreDivisibleByThree.java)                                                                       |                                                                                                                                   |
-| 2460 | [Apply Operations to an Array](https://leetcode.com/problems/apply-operations-to-an-array)                                                                             |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2460 | [Apply Operations to an Array](https://leetcode.com/problems/apply-operations-to-an-array)                                                                             |                                                                                  [![Java](assets/java.png)](src/ApplyOperationsToAnArray.java)                                                                                   |                                                                                                                                   |
 | 2465 | [Number of Distinct Averages](https://leetcode.com/problems/number-of-distinct-averages)                                                                               |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2466 | [Count Ways To Build Good Strings](https://leetcode.com/problems/count-ways-to-build-good-strings)                                                                     |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2475 | [Number of Unequal Triplets in Array](https://leetcode.com/problems/number-of-unequal-triplets-in-array)                                                               |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/ApplyOperationsToAnArray.java

@@ -0,0 +1,31 @@
+// https://leetcode.com/problems/apply-operations-to-an-array
+// T: O(N)
+// S: O(N)
+
+public class ApplyOperationsToAnArray {
+    public int[] applyOperations(int[] array) {
+        final int[] result = new int[array.length];
+        int j = 0;
+        for (int i = 0, previous = array[0] ; i < array.length - 1 ; i++) {
+            if (previous == 0) {
+                previous = array[i + 1];
+                continue;
+            }
+
+            if (previous == array[i + 1]) {
+                result[j++] = 2 * array[i];
+                previous = 0;
+                continue;
+            }
+
+            result[j++] = array[i];
+            previous = array[i + 1];
+        }
+
+        if (array[array.length - 2] != array[array.length - 1]) {
+            result[j] = array[array.length - 1];
+        }
+
+        return result;
+    }
+}