@@ -0,0 +1,618 @@
+package com.fishercoder;%0A%0Aimport com.fishercoder.common.classes.ListNode;%0Aimport com.fishercoder.common.utils.CommonUtils;%0Aimport com.fishercoder.solutions._24;%0Aimport org.junit.BeforeClass;%0Aimport org.junit.Test;%0A%0Aimport java.util.Arrays;%0A%0Apublic class _24Test %7B%0A    private static _24.Solution1 solution1;%0A    private static ListNode head;%0A%0A    @BeforeClass%0A    public static void setup() %7B%0A        solution1 = new _24.Solution1();%0A    %7D%0A%0A    @Test%0A    public void test1() %7B%0A        head = ListNode.createSinglyLinkedList(Arrays.asList(1, 2, 3, 4));%0A        CommonUtils.printList(solution1.swapPairs(head));%0A    %7D%0A%0A%7D

add test for 24