solves #2540: Minimum Common Value in java

Author: anishLearnsToCode

README.md

@@ -795,7 +795,7 @@
 | 2525 | [Categorize Box According to Criteria](https://leetcode.com/problems/categorize-box-according-to-criteria)                                                             |                                                                              [![Java](assets/java.png)](src/CategorizeBoxAccordingToCriteria.java)                                                                               |                                                                                                                                   |
 | 2529 | [Maximum Count of Positive Integer and Negative Integer](https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer)                         |                                                                       [![Java](assets/java.png)](src/MaximumCountOfPositiveIntegerAndNegativeInteger.java)                                                                       |                                                                                                                                   |
 | 2535 | [Difference Between Element Sum and Digit Sum of an Array](https://leetcode.com/problems/difference-between-element-sum-and-digit-sum-of-an-array)                     |                                                                       [![Java](assets/java.png)](src/DifferenceBetweenElementSumAndDigitSumOfAnArray.java)                                                                       |                                                                                                                                   |
-| 2540 | [Minimum Common Value](https://leetcode.com/problems/minimum-common-value)                                                                                             |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2540 | [Minimum Common Value](https://leetcode.com/problems/minimum-common-value)                                                                                             |                                                                                     [![Java](assets/java.png)](src/MinimumCommonValue.java)                                                                                      |                                                                                                                                   |
 | 2544 | [Alternating Digit Sum](https://leetcode.com/problems/alternating-digit-sum)                                                                                           |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2549 | [Count Distinct Numbers on Board](https://leetcode.com/problems/count-distinct-numbers-on-board)                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2553 | [Separate the Digits in an Array](https://leetcode.com/problems/separate-the-digits-in-an-array)                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/MinimumCommonValue.java

@@ -0,0 +1,18 @@
+// https://leetcode.com/problems/minimum-common-value
+// T: O(m + n)
+// S: O(1)
+
+public class MinimumCommonValue {
+    public int getCommon(int[] array1, int[] array2) {
+        for (int i = 0, j = 0 ; i < array1.length && j < array2.length ; ) {
+            if (array1[i] == array2[j]) return array1[i];
+
+            if (array1[i] < array2[j]) {
+                i++;
+            } else {
+                j++;
+            }
+        }
+        return -1;
+    }
+}