题目:
Suppose a sorted array is rotated at some pivot unkNown to you beforehand.
(i.e., 0 1 2 4 5 6 7might become4 5 6 7 0 1 2).
You are given a target value to search. If found in the array return its index,otherwise return -1.
You may assume no duplicate exists in the array.
解答代码:
int binarySearch(int A[],int start,int end,int key) { int mid; while (start <= end) { mid = (start + end) / 2; if (A[mid] == key) { return mid; } if (A[start] <= A[mid]) { if (A[start] <= key && key < A[mid]) end = mid; else start = mid + 1; } else { if (A[mid] < key && key <= A[end]) start = mid + 1; else end = mid; } } return -1; }
原文地址:https://www.jb51.cc/javaschema/284155.html
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。