From 255701db90d1d1d011ff7b46b374fc51c3d9d8d2 Mon Sep 17 00:00:00 2001
From: timi <63904151+Boy-timi@users.noreply.github.com>
Date: Sat, 3 Dec 2022 22:53:53 +0800
Subject: [PATCH] Update hashing_search.py

---
 .../chapter_searching/hashing_search.py       | 35 +++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/codes/python/chapter_searching/hashing_search.py b/codes/python/chapter_searching/hashing_search.py
index 90de74f22..fab8f3480 100644
--- a/codes/python/chapter_searching/hashing_search.py
+++ b/codes/python/chapter_searching/hashing_search.py
@@ -1,10 +1,41 @@
 '''
 File: hashing_search.py
-Created Time: 2022-11-25
-Author: Krahets (krahets@163.com)
+Created Time: 2022-11-26
+Author: timi (xisunyy@163.com)
 '''
 
 import sys, os.path as osp
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *
 
+""" 哈希查找（数组） """
+def hashing_search(map,target):
+    # 哈希表的 key: 目标元素，value: 索引
+    # 若哈希表中无此 key ，返回 -1
+    return map.get(target,-1)
+
+"""  哈希查找（链表） """
+def hashing_search1(map,target):
+    # 哈希表的 key: 目标元素，value: 节点对象
+    # 若哈希表中无此 key ，返回 -1
+    return map.get(target,-1)
+
+if __name__=='__main__':
+    target=3
+    # 哈希查找（数组）
+    nums=[1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
+    map=dict()                  # 初始化哈希表
+    for i in range(len(nums)):
+        map[nums[i]]=i          # key: 元素，value: 索引
+    index=hashing_search(map,target)
+    print("目标元素 3 的索引 = " ,index)
+
+    # 哈希查找（链表）
+    head=list_to_linked_list(nums)
+    map1=dict()                 # 初始化哈希表
+    while head:
+        map1[head.val]=head      # key: 结点值，value: 结点
+        head=head.next
+
+    node=hashing_search1(map1,target)
+    print("目标结点值 3 的对应结点对象为 " , node)