剑指offer8 旋转数组的最小数字

一种错误写法：

class Solution {
public:
    int minNumberInRotateArray(vector<int> rotateArray) {
        int length = rotateArray.size();
        if(length <= )
            return ;
        if(rotateArray[] == rotateArray[length-] && rotateArray[] == rotateArray[(length-)/]){
            int number = 0x7FFFFFFF;
            for(int i = ;i < length;i++){
                if(rotateArray[i] < number)
                    number = rotateArray[i];
            }
            return number;
        }
        else if(rotateArray[] < rotateArray[length-]){
            return rotateArray[];
        }
        else{
            int begin = ;
            int end = length-;
            while(begin < end){
                int mid = (begin + end)/;
                if(rotateArray[mid] >= rotateArray[begin])
                    begin = mid;
                else if(rotateArray[mid] <= rotateArray[begin])
                    end = mid;
            }
            return rotateArray[begin];
        }
    }
};

如果只有两个数，begin < end就会陷入死循环