题解 | #旋转位置的特定牛#
旋转位置的特定牛
https://www.nowcoder.com/practice/4872ba1fef224bd382b49a5958d996ab
import java.util.*; public class Solution { /** * 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 target int整型 * @return int整型 */ public int search (int[] nums, int target) { // write code here int left = 0, right = nums.length - 1; while (left <= right) { int mid = left + (right - left) / 2; if (nums[mid] == target) { return mid; } if (nums[mid] <= nums[left]) { if (target <= nums[left] && target > nums[mid]) { right = mid - 1; } else { left = mid + 1; } } else { if (target < nums[mid] && target >= nums[right]) { left = mid + 1; } else { right = mid - 1; } } } return -1; } }
题目解答分析:
通过过循环判断在第几个位置出现则返回几,否则返回-1。
编程语言:
java