From 7a02e2ae09d94846d0a4a6ddc2bd6ed5e0c368ab Mon Sep 17 00:00:00 2001 From: liangjinglin Date: Sun, 19 Jan 2025 14:17:42 +0800 Subject: [PATCH] =?UTF-8?q?2025-01-18=20=E6=8F=92=E5=80=BC=E6=9F=A5?= =?UTF-8?q?=E6=89=BE=E6=B3=95?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/dataANDcalc/java/Search/InsertSearch.java | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/dataANDcalc/java/Search/InsertSearch.java diff --git a/src/dataANDcalc/java/Search/InsertSearch.java b/src/dataANDcalc/java/Search/InsertSearch.java new file mode 100644 index 0000000..52773b8 --- /dev/null +++ b/src/dataANDcalc/java/Search/InsertSearch.java @@ -0,0 +1,47 @@ +package Search; + +import SortAlgori.MergeSort; + +public class InsertSearch { + + private int[] arr; + + public InsertSearch(int[] arr){ + this.arr = arr; + } + + private int search(int left, int right, int value){ + int index = -1; + if(left >= right || arr[left] > value || arr[right] < value){ + if(arr[left] == value){ + return left; + } + return index; + } + int mid = left + (right - left)*(value - arr[left])/(arr[right] - arr[left]); + if(value == arr[mid]){ + return mid; + } + if(value > arr[mid]){ + index = search(mid + 1, right, value); + } + if(value < arr[mid]){ + index = search(left, mid - 1, value); + } + return index; + } + + public static void main(String[] args) { + int[] arr = new int[]{1,9,11,34,89,23,53,124,52}; + MergeSort mergeSort = new MergeSort(arr); + mergeSort.mergeSort(0, arr.length-1); + System.out.println("排序后的序列:"); + mergeSort.show(); + InsertSearch insertSearch = new InsertSearch(mergeSort.getArr()); + long startTime = System.currentTimeMillis(); + int search = insertSearch.search(0, arr.length-1, 124); + long endTime = System.currentTimeMillis(); + System.out.println("查找到的下标是:" + search); + System.out.println("查找所花费的时间:" + (endTime - startTime) + "ms"); + } +}