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Update linear_search and hashing_search.

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This commit is contained in:
Yudong Jin
2023-02-04 23:49:37 +08:00
parent 62114ce79a
commit f14e3e4c57
22 changed files with 95 additions and 92 deletions
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8
codes/python/chapter_searching/hashing_search.py
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@ -9,13 +9,13 @@ sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
from include import *
""" 哈希查找（数组） """
def hashing_search(mapp, target):
def hashing_search_array(mapp, 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 mapp.get(target, -1)
""" 哈希查找（链表） """
def hashing_search1(mapp, target):
def hashing_search_linkedlist(mapp, target):
# 哈希表的 key: 目标元素，value: 结点对象
# 若哈希表中无此 key ，返回 -1
return mapp.get(target, -1)
@ -31,7 +31,7 @@ if __name__ == '__main__':
mapp = {}
for i in range(len(nums)):
mapp[nums[i]] = i # key: 元素，value: 索引
index = hashing_search(mapp, target)
index = hashing_search_array(mapp, target)
print("目标元素 3 的索引 =", index)
# 哈希查找（链表）
@ -41,5 +41,5 @@ if __name__ == '__main__':
while head:
map1[head.val] = head # key: 结点值，value: 结点
head = head.next
node = hashing_search1(map1, target)
node = hashing_search_linkedlist(map1, target)
print("目标结点值 3 的对应结点对象为", node)

8
codes/python/chapter_searching/linear_search.py
View File

@ -9,7 +9,7 @@ sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
from include import *
""" 线性查找（数组） """
def linear_search(nums, target):
def linear_search_array(nums, target):
# 遍历数组
for i in range(len(nums)):
if nums[i] == target: # 找到目标元素，返回其索引
@ -17,7 +17,7 @@ def linear_search(nums, target):
return -1 # 未找到目标元素，返回 -1
""" 线性查找（链表） """
def linear_search1(head, target):
def linear_search_linkedlist(head, target):
# 遍历链表
while head:
if head.val == target: # 找到目标结点，返回之
@ -32,10 +32,10 @@ if __name__ == '__main__':
# 在数组中执行线性查找
nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
index = linear_search(nums, target)
index = linear_search_array(nums, target)
print("目标元素 3 的索引 =", index)
# 在链表中执行线性查找
head = list_to_linked_list(nums)
node = linear_search1(head, target)
node = linear_search_linkedlist(head, target)
print("目标结点值 3 的对应结点对象为", node)