Add Numbers Have Different Signs (#4317)

Co-authored-by: BamaCharanChhandogi <b.c.chhandogi@gmailcom>

src/main/java/com/thealgorithms/bitmanipulation/NumbersDifferentSigns.java

@@ -0,0 +1,13 @@
+package com.thealgorithms.bitmanipulation;
+
+/**
+ * Numbers Different Signs
+ * @author Bama Charan Chhandogi
+ */
+
+public class NumbersDifferentSigns {
+
+    public static boolean differentSigns(int num1, int num2) {
+        return (num1 ^ num2) < 0;
+    }
+}

src/test/java/com/thealgorithms/bitmanipulation/NumbersDifferentSignsTest.java

@@ -0,0 +1,33 @@
+package com.thealgorithms.bitmanipulation;
+
+/**
+ * test Cases of Numbers Different Signs
+ * @author Bama Charan Chhandogi
+ */
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class NumbersDifferentSignsTest {
+
+    @Test
+    void testDifferentSignsPositiveNegative() {
+        assertTrue(NumbersDifferentSigns.differentSigns(2, -1));
+    }
+
+    @Test
+    void testDifferentSignsNegativePositive() {
+        assertTrue(NumbersDifferentSigns.differentSigns(-3, 7));
+    }
+
+    @Test
+    void testSameSignsPositive() {
+        assertFalse(NumbersDifferentSigns.differentSigns(10, 20));
+    }
+
+    @Test
+    void testSameSignsNegative() {
+        assertFalse(NumbersDifferentSigns.differentSigns(-5, -8));
+    }
+}