solves #2169: Count Operations to Obtain Zero in java

Author: anishLearnsToCode

Diff for: README.md

@@ -712,7 +712,7 @@
 | 2154 | [Keep Multiplying Found Values by Two](https://leetcode.com/problems/keep-multiplying-found-values-by-two)                                                             |                                                                               [![Java](assets/java.png)](src/KeepMultiplyingFoundValuesByTwo.java)                                                                               |                                                                                                                                   |
 | 2160 | [Minimum Sum of Four Digit Number After Splitting Digits](https://leetcode.com/problems/minimum-sum-of-four-digit-number-after-splitting-digits)                       |                                                                       [![Java](assets/java.png)](src/MinimumSumOfFourDigitNumberAfterSplittingDigits.java)                                                                       |                                                                                                                                   |
 | 2164 | [Sort Even and Odd Indices Independently](https://leetcode.com/problems/sort-even-and-odd-indices-independently)                                                       |                                                                             [![Java](assets/java.png)](src/SortEvenAndOddIndicesIndependently.java)                                                                              |                                                                                                                                   |
-| 2169 | [Count Operations to Obtain Zero](https://leetcode.com/problems/count-operations-to-obtain-zero)                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2169 | [Count Operations to Obtain Zero](https://leetcode.com/problems/count-operations-to-obtain-zero)                                                                       |                                                                                 [![Java](assets/java.png)](src/CountOperationsToObtainZero.java)                                                                                 |                                                                                                                                   |
 | 2176 | [Count Equal and Divisible Pairs in an Array](https://leetcode.com/problems/count-equal-and-divisible-pairs-in-an-array)                                               |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2180 | [Count Integers With Even Digit Sum](https://leetcode.com/problems/count-integers-with-even-digit-sum)                                                                 |                                                                                [![Java](assets/java.png)](src/CountIntegersWithEvenDigitSum.java)                                                                                |                                                                                                                                   |
 | 2185 | [Counting Words With a Given Prefix](https://leetcode.com/problems/counting-words-with-a-given-prefix)                                                                 |                                                                                                                                                                                                                                  |                                                                                                                                   |

Diff for: src/CountOperationsToObtainZero.java

@@ -0,0 +1,16 @@
+// https://leetcode.com/problems/count-operations-to-obtain-zero
+// T: O(max(a, b))
+// S: O(1)
+
+public class CountOperationsToObtainZero {
+    public int countOperations(int num1, int num2) {
+        int operations = 0;
+        while (num1 != 0 && num2 != 0) {
+            operations++;
+            if (num1 >= num2) {
+                num1 -= num2;
+            } else num2 -= num1;
+        }
+        return operations;
+    }
+}