Add MedianOfTwoSortedArrays algorithm (#5554)

src/test/java/com/thealgorithms/divideandconquer/MedianOfTwoSortedArraysTest.java

@@ -0,0 +1,41 @@
+package com.thealgorithms.divideandconquer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.stream.Stream;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class MedianOfTwoSortedArraysTest {
+
+    @ParameterizedTest
+    @MethodSource("provideTestCases")
+    void testFindMedianSortedArrays(int[] nums1, int[] nums2, double expectedMedian) {
+        assertEquals(expectedMedian, MedianOfTwoSortedArrays.findMedianSortedArrays(nums1, nums2));
+    }
+
+    private static Stream<Arguments> provideTestCases() {
+        return Stream.of(
+            // Test case 1: Arrays of equal length
+            Arguments.of(new int[] {1, 3}, new int[] {2, 4}, 2.5),
+
+            // Test case 2: Arrays of different lengths
+            Arguments.of(new int[] {1, 3}, new int[] {2}, 2.0),
+
+            // Test case 3: Arrays with even total length
+            Arguments.of(new int[] {1, 2, 8}, new int[] {3, 4, 5, 6, 7}, 4.5),
+
+            // Test case 4: Arrays with odd total length
+            Arguments.of(new int[] {1, 2, 8}, new int[] {3, 4, 5}, 3.5),
+
+            // Test case 5: Single element arrays
+            Arguments.of(new int[] {1}, new int[] {3}, 2.0),
+
+            // Test case 6: Empty arrays
+            Arguments.of(new int[] {}, new int[] {0}, 0.0),
+
+            // Test case 7: Same element arrays
+            Arguments.of(new int[] {2, 2, 2}, new int[] {2, 2, 2}, 2.0));
+    }
+}