mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-26 21:26:28 +08:00
b2f0d4603d
* Add Ruby and Kotlin icons Add the avatar of @curtishd * Update README * Synchronize zh-hant and zh versions. * Translate the pythontutor blocks to traditional Chinese * Fix en/mkdocs.yml * Update the landing page of the en version. * Fix the Dockerfile * Refine the en landingpage * Fix en landing page * Reset the README.md
49 lines
No EOL
1.4 KiB
Kotlin
49 lines
No EOL
1.4 KiB
Kotlin
/**
|
||
* File: hashing_search.kt
|
||
* Created Time: 2024-01-25
|
||
* Author: curtishd (1023632660@qq.com)
|
||
*/
|
||
|
||
package chapter_searching
|
||
|
||
import utils.ListNode
|
||
|
||
/* 雜湊查詢（陣列） */
|
||
fun hashingSearchArray(map: Map<Int?, Int>, target: Int): Int {
|
||
// 雜湊表的 key: 目標元素，_val: 索引
|
||
// 若雜湊表中無此 key ，返回 -1
|
||
return map.getOrDefault(target, -1)
|
||
}
|
||
|
||
/* 雜湊查詢（鏈結串列） */
|
||
fun hashingSearchLinkedList(map: Map<Int?, ListNode?>, target: Int): ListNode? {
|
||
// 雜湊表的 key: 目標節點值，_val: 節點物件
|
||
// 若雜湊表中無此 key ，返回 null
|
||
return map.getOrDefault(target, null)
|
||
}
|
||
|
||
/* Driver Code */
|
||
fun main() {
|
||
val target = 3
|
||
|
||
/* 雜湊查詢（陣列） */
|
||
val nums = intArrayOf(1, 5, 3, 2, 4, 7, 5, 9, 10, 8)
|
||
// 初始化雜湊表
|
||
val map = HashMap<Int?, Int>()
|
||
for (i in nums.indices) {
|
||
map[nums[i]] = i // key: 元素，_val: 索引
|
||
}
|
||
val index = hashingSearchArray(map, target)
|
||
println("目標元素 3 的索引 = $index")
|
||
|
||
/* 雜湊查詢（鏈結串列） */
|
||
var head = ListNode.arrToLinkedList(nums)
|
||
// 初始化雜湊表
|
||
val map1 = HashMap<Int?, ListNode?>()
|
||
while (head != null) {
|
||
map1[head._val] = head // key: 節點值，_val: 節點
|
||
head = head.next
|
||
}
|
||
val node = hashingSearchLinkedList(map1, target)
|
||
println("目標節點值 3 的對應節點物件為 $node")
|
||
} |