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50 lines
1.2 KiB
50 lines
1.2 KiB
/**
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* File: linear_search.kt
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* Created Time: 2024-01-25
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* Author: curtishd (1023632660@qq.com)
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*/
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package chapter_searching
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import utils.ListNode
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/* 线性查找（数组） */
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fun linearSearchArray(nums: IntArray, target: Int): Int {
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// 遍历数组
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for (i in nums.indices) {
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// 找到目标元素，返回其索引
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if (nums[i] == target)
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return i
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}
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// 未找到目标元素，返回 -1
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return -1
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}
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/* 线性查找（链表） */
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fun linearSearchLinkedList(h: ListNode?, target: Int): ListNode? {
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// 遍历链表
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var head = h
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while (head != null) {
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// 找到目标节点，返回之
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if (head._val == target)
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return head
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head = head.next
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}
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// 未找到目标节点，返回 null
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return null
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}
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/* Driver Code */
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fun main() {
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val target = 3
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/* 在数组中执行线性查找 */
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val nums = intArrayOf(1, 5, 3, 2, 4, 7, 5, 9, 10, 8)
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val index = linearSearchArray(nums, target)
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println("目标元素 3 的索引 = $index")
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/* 在链表中执行线性查找 */
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val head = ListNode.arrToLinkedList(nums)
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val node = linearSearchLinkedList(head, target)
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println("目标节点值 3 的对应节点对象为 $node")
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} |