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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/swift/chapter_searching/hashing_search.swift
View File

@ -7,14 +7,14 @@
import utils
/* 哈希查找（数组） */
func hashingSearch(map: [Int: Int], target: Int) -> Int {
func hashingSearchArray(map: [Int: Int], target: Int) -> Int {
// 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[target, default: -1]
}
/* 哈希查找（链表） */
func hashingSearch1(map: [Int: ListNode], target: Int) -> ListNode? {
func hashingSearchLinkedList(map: [Int: ListNode], target: Int) -> ListNode? {
// 哈希表的 key: 目标结点值，value: 结点对象
// 若哈希表中无此 key ，返回 null
return map[target]
@ -33,7 +33,7 @@ enum HashingSearch {
for i in nums.indices {
map[nums[i]] = i // key: 元素，value: 索引
}
let index = hashingSearch(map: map, target: target)
let index = hashingSearchArray(map: map, target: target)
print("目标元素 3 的索引 = \(index)")
/* 哈希查找（链表） */
@ -44,7 +44,7 @@ enum HashingSearch {
map1[head!.val] = head! // key: 结点值，value: 结点
head = head?.next
}
let node = hashingSearch1(map: map1, target: target)
let node = hashingSearchLinkedList(map: map1, target: target)
print("目标结点值 3 的对应结点对象为 \(node!)")
}
}

8
codes/swift/chapter_searching/linear_search.swift
View File

@ -7,7 +7,7 @@
import utils
/* 线性查找（数组） */
func linearSearch(nums: [Int], target: Int) -> Int {
func linearSearchArray(nums: [Int], target: Int) -> Int {
// 遍历数组
for i in nums.indices {
// 找到目标元素，返回其索引
@ -20,7 +20,7 @@ func linearSearch(nums: [Int], target: Int) -> Int {
}
/* 线性查找（链表） */
func linearSearch(head: ListNode?, target: Int) -> ListNode? {
func linearSearchLinkedList(head: ListNode?, target: Int) -> ListNode? {
var head = head
// 遍历链表
while head != nil {
@ -42,12 +42,12 @@ enum LinearSearch {
/* 在数组中执行线性查找 */
let nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
let index = linearSearch(nums: nums, target: target)
let index = linearSearchArray(nums: nums, target: target)
print("目标元素 3 的索引 = \(index)")
/* 在链表中执行线性查找 */
let head = ListNode.arrToLinkedList(arr: nums)
let node = linearSearch(head: head, target: target)
let node = linearSearchLinkedList(head: head, target: target)
print("目标结点值 3 的对应结点对象为 \(node!)")
}
}