153. Find Minimum in Rotated Sorted Array

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).

Find the minimum element.

You may assume no duplicate exists in the array.

 

给定一个升序(没有重复数字)，但是被移动了N位，获取最小值

思路：就是找到升序队列的第一个元素

    public int findMin(int[] nums) {
        if(nums.length == 1) return  nums[0];
        int low = 0,high=nums.length  -1;
        while (low < high)
        {
            int mid = (low + high)/2;
            if (nums[mid] > nums[high]) low = mid +1;
            else high = mid; 
        }
        return nums[low];       
    }

 扩展: 在移动了N位的数组中找出目标数的索引位置 33. Search in Rotated Sorted Array