If you use the uGUI for making mobile UI Event, perhaps, Your code like below code.

* button script (Example): Mobile has just 3 events. Pressed, Exit from a button (Cancel), Deattached from a button (OK).

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class CommonButton : MonoBehaviour, IPointerDownHandler, IPointerExitHandler, IPointerClickHandler {

GameObject selectedObject;
 
//Process for Selected button
public void OnPointerDown(PointerEventData eventData) {
selectedObject = gameObject;
//Blah blah... something
}

//Process for cancel button
public void OnPointerExit(PointerEventData eventData) {
selectedObject = null;
//Blah blah... something
}

//Process for OK button
public void OnPointerClick(PointerEventData eventData) {
if (selectedObject != gameObject) return;
selectedObject = null;
//Blah blah... something
}
}

Normally, We attach this code @ each button object.
It is terrible for maintenance.

If someone wants to change some behavior, We should change all.

however, we could solve this problem by simple Inheritance.

1. Make a parents class for sharing.

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class CommonButton : MonoBehaviour, IPointerDownHandler, IPointerExitHandler, IPointerClickHandler {

 GameObject selectedObject;

 public void OnPointerDown(PointerEventData eventData) {
 selectedObject = gameObject;
 PressedButton();
 }

 public void OnPointerExit(PointerEventData eventData) {
 selectedObject = null;
 CancelButton();
 }

 public void OnPointerClick(PointerEventData eventData) {
 if (selectedObject != gameObject) return;
 selectedObject = null;
 OKButton();
 }

 public virtual void PressedButton() { } //Virtual method is key point
 public virtual void CancelButton() { }
 public virtual void OKButton() { }
}

2. Make a child class for attaching to each button.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BehaviourRadioMenus : CommonButton {

 override public void PressedButton() {
 RevealDesc();
 }

 override public void CancelButton() {
 HideDesc();
 }

 override public void OKButton() {
 HideDesc();
 }

 void RevealDesc() {
 }

 void HideDesc() {
 }
}

Cheers!

I get it every time when I got code test.

using System;

namespace NodeTest
{
    class Program
    {
        static void Main(string[] args)
        {
            const string STR_VALUE = "10524";
            ListNode headNode = null;
            ListNode pointNode = null;
 
             MakeNode(ref headNode, null, STR_VALUE);

             for (int i = 0; i < STR_VALUE.Length; i++)
             {
                 for (int j = i+1; j < STR_VALUE.Length; j++)
                 {
                     if (GetNode(headNode, i).val > GetNode(headNode, j).val)
                     {
                         int x = GetNode(headNode, i).val;
                         GetNode(headNode, i).val = GetNode(headNode, j).val;
                         GetNode(headNode, j).val = x;
                     }
                 }
             }

             pointNode = headNode;
             while(true)
             {
                 Console.WriteLine(pointNode.val.ToString());
                 if (pointNode.next == null) break;
                 pointNode = pointNode.next;
             }
    }

     static void MakeNode(ref ListNode currentnode, ListNode previousnode, string str)
     {
         if (str.Length <= 0) return;
         currentnode = new ListNode(int.Parse(str.Substring(0, 1)));
         if (previousnode != null) {
             previousnode.next = currentnode;
         }
         ListNode dummynode = null;
         MakeNode(ref dummynode, currentnode, str.Substring(1));
     }

     static ListNode GetNode(ListNode headNode, int idx)
     {
         ListNode currentnode = headNode;
         for (int i = 0; i < idx; i++)
         {
             currentnode = currentnode.next;
         }
         return currentnode;
     }
 }

 public class ListNode {
     public int val;
     public ListNode next;
     public ListNode(int x) { val = x; }
 }
}

I modified iTween for working  Fade/Color to the uGUI elements such as Text, Image, Textmesh.
and It will work Action<T> Lambda method.

iTween.ValueTo(gameObject, iTween.Hash(
    "from", 1f,
    "to", 0f,
    "time", 1f,
    "onupdate", (System.Action<object>)(x => { missedInfo.color = new Color(1f, 0f, 0f, (float)x); }),
    "oncomplete", (System.Action<object>)(x => missedInfo.gameObject.SetActive(true))
    ));

* Caution: If you didn't install the Textmesh pro, You could see the Error message on Unity3D

Enjoy~