假设按照升序排序的数组在预先未知的某个点上进行了旋转. ( 例如,数组 [0,1,2,4,5,6,7] 可能变为 [4,5,6,7,0,1,2] ). 搜索一个给定的目标值,如果数组中存在这个目标值,则返回它的索引,否则返回 -1 . 你可以假设数组中不存在重复的元素. 你的算法时间复杂度必须是 O(log n) 级别. 示例 1: 输入: nums = [4,5,6,7,0,1,2], target = 0 输出: 4 示例 2: 输入: nums = [4,5,6,7,0,1,2], tar…

题目描述: python实现 Search in Rotated Sorted Array 搜索旋转排序数组   中文:假设按照升序排序的数组在预先未知的某个点上进行了旋转. ( 例如,数组 [0,1,2,4,5,6,7] 可能变为 [4,5,6,7,0,1,2] ). 搜索一个给定的目标值,如果数组中存在这个目标值,则返回它的索引,否则返回 -1 . 你可以假设数组中不存在重复的元素. 你的算法时间复杂度必须是 O(log n) 级别. 英文:Suppose an array sorted i…

假设按照升序排序的数组在预先未知的某个关键点上旋转.(即 0 1 2 4 5 6 7 将变成 4 5 6 7 0 1 2).给你一个目标值来搜索,如果数组中存在这个数则返回它的索引,否则返回 -1.你可以假设数组中不存在重复.详见:https://leetcode.com/problems/search-in-rotated-sorted-array/description/ Java实现: class Solution { public int search(int[] nums, int t…

题目描述: python实现 Search in Rotated Sorted Array2 搜索旋转排序数组   中文: 假设按照升序排序的数组在预先未知的某个点上进行了旋转. ( 例如,数组 [0,0,1,2,2,5,6] 可能变为 [2,5,6,0,0,1,2] ). 编写一个函数来判断给定的目标值是否存在于数组中.若存在返回 true,否则返回 false. 英文: Suppose an array sorted in ascending order is rotated at some…

Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2). You are given a target value to search. If found in the array return its index, otherwise return -1. You may assume no duplicate…

题目: Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given a target value to search. If found in the array return its index, otherwise return -1. You may assume no du…

Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given a target value to search. If found in the array return its index, otherwise return -1. You may assume no duplic…

Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., [0,1,2,4,5,6,7] might become [4,5,6,7,0,1,2]). You are given a target value to search. If found in the array return its index, otherwise return -1.…

题目: 恢复旋转排序数组 给定一个旋转排序数组,在原地恢复其排序. 样例 [4, 5, 1, 2, 3] -> [1, 2, 3, 4, 5] 挑战 使用O(1)的额外空间和O(n)时间复杂度 说明 什么是旋转数组? 比如,原始数组为[1,2,3,4], 则其旋转数组可以是[1,2,3,4], [2,3,4,1], [3,4,1,2], [4,1,2,3] 解题: 开始我想,先找到中间的临界点,然后在排序,临界点找到了,排序不知道怎么搞了,在这里,看到了很好的方法,前半部分逆序,后半部分逆序,整…

Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given a target value to search. If found in the array return its index, otherwise return -1. You may assume no duplic…