LeetCode(153)Find Minimum in Rotated Sorted Array
来源:互联网 发布:域名icp备案 编辑:程序博客网 时间:2024/04/27 20:04
题目如下:
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).
Find the minimum element.
You may assume no duplicate exists in the array.
分析如下:
是对二分查找的变形,其中关于mid到底保留还是舍去,还是挺巧妙的。详见注释
我的代码:
//12msclass Solution {public: int findMin(vector<int> &num) { int start = 0; int end = num.size() - 1; int mid = 0; while (start < end) { //注意这里和普通的二分查找不同,这里是start < end不是 start <= end. mid = start + (end - start)/2; if (num[mid] > num[end]) start = mid + 1; //此时可以扔掉mid的值 else end = mid;//此时不能扔掉mid的值 } return num[end]; //退出循环说明start与end相等,所以只剩一个元素可能,所以return [start]或者return [end]都可以了。 //注意不能return mid,可以从{2,1}这个输入看出来。 }};
0 0
- [LeetCode] Find Minimum in Rotated Sorted Array
- Leetcode: Find Minimum in Rotated Sorted Array
- leetcode :Find Minimum in Rotated Sorted Array
- LeetCode:Find Minimum in Rotated Sorted Array
- 【Leetcode】Find Minimum in Rotated Sorted Array
- LeetCode:Find Minimum in Rotated Sorted Array
- LeetCode: Find Minimum in Rotated Sorted Array
- leetcode: Find Minimum in Rotated Sorted Array
- [LeetCode] Find Minimum in Rotated Sorted Array
- Find Minimum in Rotated Sorted Array -- LeetCode
- Leetcode: Find Minimum in Rotated Sorted Array
- leetcode Find Minimum in Rotated Sorted Array
- leetcode - Find Minimum in Rotated Sorted Array
- LeetCode Find Minimum in Rotated Sorted Array
- Leetcode--Find Minimum in Rotated Sorted Array
- leetcode: Find Minimum in Rotated Sorted Array
- [leetcode] Find Minimum in Rotated Sorted Array
- LeetCode:Find Minimum in Rotated Sorted Array
- Guava学习笔记-Function,Predicate
- 能够使自己的优化水平,有一定性晋升。
- Windows下利用Cygwin登录远程Linux
- Python 对字典元素的赋值 (字典key和value均为组合类型)
- Leetcode NO.49 Group Anagrams
- LeetCode(153)Find Minimum in Rotated Sorted Array
- LeetCode(154) Find Minimum in Rotated Sorted Array II
- craking the code interview all path sum python
- Search insert position @leetcode
- Python 使用nltk计算词的搭配
- 对于pyqt中预定义的快捷键重定义问题
- Leetcode NO.1 Two Sum
- springMVC简单Demo
- 【DP】JLOI2008 T2 CODES