Fix integer overflow in AbsoluteValue.getAbsValue for Integer.MIN_VALUE

Author: arsam4waffels

src/main/java/com/thealgorithms/maths/AbsoluteValue.java

@@ -10,7 +10,7 @@ private AbsoluteValue() {
      * @param number The number to be transformed
      * @return The absolute value of the {@code number}
      */
-    public static int getAbsValue(int number) {
+    public static long getAbsValue(long number) {
         return Math.abs(number);
     }
 }

src/test/java/com/thealgorithms/maths/AbsoluteValueTest.java

@@ -34,6 +34,6 @@ void testNegativeNumbers() {
 
     @Test
     void testMinIntEdgeCase() {
-        assertEquals(Integer.MIN_VALUE, AbsoluteValue.getAbsValue(Integer.MIN_VALUE));
+        assertEquals(2147483648L, AbsoluteValue.getAbsValue(Integer.MIN_VALUE));
     }
 }