solves #2357: Make Array Zero by Subtracting Equal Amounts in java

Author: anishLearnsToCode

README.md

@@ -755,7 +755,7 @@
 | 2347 | [Best Poker Hand](https://leetcode.com/problems/best-poker-hand)                                                                                                       |                                                                                        [![Java](assets/java.png)](src/BestPokerHand.java)                                                                                        |                                                                                                                                   |
 | 2348 | [Number of Zero-Filled Subarrays](https://leetcode.com/problems/number-of-zero-filled-subarrays)                                                                       |                                                                            [![Python](assets/python.png)](python/number_of_zero_filled_subarrays.py)                                                                             |                                                                                                                                   |
 | 2351 | [First Letter to Appear Twice](https://leetcode.com/problems/first-letter-to-appear-twice)                                                                             |                                                                                  [![Java](assets/java.png)](src/FirstLetterToAppearTwice.java)                                                                                   |                                                                                                                                   |
-| 2357 | [Make Array Zero by Subtracting Equal Amounts](https://leetcode.com/problems/make-array-zero-by-subtracting-equal-amounts)                                             |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2357 | [Make Array Zero by Subtracting Equal Amounts](https://leetcode.com/problems/make-array-zero-by-subtracting-equal-amounts)                                             |                                                                           [![Java](assets/java.png)](src/MakeArrayZeroBySubtractingEqualAmounts.java)                                                                            |                                                                                                                                   |
 | 2360 | [Longest Cycle in a Graph](https://leetcode.com/problems/longest-cycle-in-a-graph)                                                                                     |                                                                                 [![Python](assets/python.png)](python/longest_cycle_in_graph.py)                                                                                 |                                                                                                                                   |
 | 2363 | [Merge Similar Items](https://leetcode.com/problems/merge-similar-items)                                                                                               |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2367 | [Number of Arithmetic Triplets](https://leetcode.com/problems/number-of-arithmetic-triplets)                                                                           |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/MakeArrayZeroBySubtractingEqualAmounts.java

@@ -0,0 +1,18 @@
+// https://leetcode.com/problems/make-array-zero-by-subtracting-equal-amounts
+// T: O(|nums|)
+// S: O(|nums|)
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class MakeArrayZeroBySubtractingEqualAmounts {
+    public int minimumOperations(int[] nums) {
+        final Set<Integer> set = new HashSet<>();
+        for (int element : nums) {
+            if (element != 0) {
+                set.add(element);
+            }
+        }
+        return set.size();
+    }
+}