题解 | #二分查找-I#

/**
 * 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整型一维数组
 * @param numsLen int nums数组长度
 * @param target int整型
 * @return int整型
 */
int search(int* nums, int numsLen, int target ) {
    // write code here
    int left = 0;
    int right = numsLen - 1; //注意一下
    int mid;
    if (numsLen == 0)
        return -1;
    while (left <= right) {
        mid = (right + left) / 2;
        if (nums[mid] < target) {
            left = mid + 1;
        } else if (nums[mid] > target) {
            right = mid - 1;
        } else {
            return mid;
        }
    }
        return -1;
}