字符數組查重置頂

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

public class String_demo : MonoBehaviour {
    private Dictionary<string, List<string>> _lib = new Dictionary<string, List<string>>();
    private Dictionary<string, int> _lib_paixu = new Dictionary<string, int>();


    //總的庫
    List<string> _list = new List<string>();
    //只爲了字符串名字，可替換
    public GameObject[] str_arr;

    // Use this for initialization
    void Start () {

        Fan_test();

    }
	
	// Update is called once per frame
	void Update () {
		
	}
    //把字符串查重後加進字典
   void Pixu_str(string str)
    {        
       
        if (_list.Contains(str))
        {
            List<string> _list_test = new List<string>();
            _list_test.Add(str);

           
            _lib[str].Add(str);
           
            

        }
        else
        {           
            _list.Add(str);
            List<string> _list_test = new List<string>();
            _list_test.Add(str);
            _lib.Add(str, _list_test);
        }
                
    }
    //對查重後的字典進行排序
   void Fan_test()
    {
        for (int i = 0; i < str_arr.Length; i++)
        {
            Pixu_str(str_arr[i].name);

        }
       // print("查重後個數：" + _lib.Count);

        foreach (var item in _lib)
        {
          //  print("重複的名字" + item.Key + "重複次數" + item.Value.Count);
            _lib_paixu.Add(item.Key, item.Value.Count);
        }
        List<KeyValuePair<string, int>> list = new List<KeyValuePair<string, int>>(_lib_paixu);
        list.Sort(delegate (KeyValuePair<string, int> s1, KeyValuePair<string, int> s2)
        {
            //從大到小
            return s2.Value.CompareTo(s1.Value);
            //從小到大
            //return s1.Value.CompareTo(s2.Value);
        });
        for (int i = 0; i < list.Count; i++)
        {
            print("字符串值"+ list[i].Key+"\n"+ "出現的次數" + list[i].Value);
        }
    }
}