题解 | #二分查找-I#

class Solution {
public:
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param nums int整型vector 
     * @param target int整型 
     * @return int整型
     */
    int search(vector<int>& nums, int target) {
        // write code here
        int start = 0;
        int end = nums.size() - 1;
        while (start <= end) {
            int mid = (start + end) / 2;
            if (nums[mid] == target) {
                return mid;
            }
            if (nums[mid] > target) {
                end = mid - 1;
            } else {
                start = mid + 1;
            }
        }

        return -1;
    }
private:
};