LeetCode:81. Search in Rotated Sorted Array II
这题是在32. Search in Rotated Sorted Array I的基础上,处理特殊情况有重复数据的问题,有两个代表例子
如3,1,1和1,1,3,1只需在原基础上考虑这两种请求,完善上一题的分类思想,还有就是二分查找的迭代会完成接
下来的事情
class Solution { public: bool search(vector<int>& nums, int target) { int low,high; int media; low = 0; high = nums.size() - 1; while(low <= high){ media = (high+low) / 2; if(nums[media] == target) return true; if(nums[media] < nums[high]) if(nums[media] < target && target <= nums[high]) low = media + 1; else high = media - 1; else if(nums[media] > nums[high]) if(nums[low] <= target && target < nums[media]) high = media - 1; else low = media + 1; else if(nums[high] != nums[low]) high = media - 1; else high = high - 1; } return false; } };