leetcode之Find Minimum in Rotated Sorted Array
問題描述如下:
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.
問題連結cpp程式碼如下:
class Solution { public: int findMin(vector<int> &num) { if(num.size()==0)return -1; int l=0,h=num.size()-1; while(num[l]>num[h]){ if(l+1==h) return num[h]; int m=l+(h-l)/2; if(num[l]<num[m]) l=m; else h=m; } return num[l]; } };
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