1)如果nums[mid] < target <= nums[right],说明target在右边区间里,则left = mid + 1; 2)否则在左边区间里,搜索左边区间,right = mid - 1; 3. nums[mid] > nums[right],说明[elft, mid]区间是在左边的递增区间,然后判断target是否在这个左边区间里 1)如果nums[left] <= targe
完整代码如下: classSolution{public:boolsearch(vector<int>& nums,inttarget){if(nums.size() <=0)returnfalse;intstart =0, end = (int)nums.size() -1;while(start +1< end) {intmid = start + (end - start) /2;if(nums[mid] == target)returntrue;if(nums[mid] > nums[start]) {if(...
leetcode 33 Search in Rotated Sorted Array 详细解答 leetcode 33 Search in Rotated Sorted Array 详细解答 因为题目要求时间复杂度要是O(log n),所以这里很明显要用二分法。 但应该怎么构造二分? 流程如下: 具体代码如下:智能推荐leetcode 33[medium]---Search in Rotated Sorted Array 难度:medium Supp...
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. You may assume no duplic...
Search in Rotated Sorted Array I && II Leetcode 对有序数组进行二分查找(下面仅以非递减数组为例): 1. int binarySort(int A[], int lo, int hi, int target) 2. { 3. while(lo <= hi) 4. { 5. int mid = lo + (hi - lo)/2; ...
Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., [0,0,1,2,2,5,6] might become [2,5,6,0,0,1,2]). You are given a target value to search. If found in the array return true, otherwise return false. Example 1: Input: num...
Search in Rotated Sorted Array II Follow up for "Search in Rotated Sorted Array": What ifduplicatesare>[1,3,1,1,1], 3 Would this affect the run-time complexity? How and why? --run-time的最坏情况是O(n)了,因为特殊情况出现的时候需要额外处理,可能做线性搜索 ...
这道是之前那道Search in Rotated Sorted Array 在旋转有序数组中搜索的延伸,现在数组中允许出现重复数字,这个也会影响我们选择哪半边继续搜索,由于之前那道题不存在相同值,我们在比较中间值和最右值时就完全符合之前所说的规律:如果中间的数小于最右边的数,则右半段是有序的,若中间数大于最右边数,则左半段是有...
Can you solve this real interview question? Search in Rotated Sorted Array - There is an integer array nums sorted in ascending order (with distinct values). Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1
Can you solve this real interview question? Search in Rotated Sorted Array - There is an integer array nums sorted in ascending order (with distinct values). Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1