leetcode-34-Find First and Last Position of Element in Sorted Array

最新推荐文章于 2024-11-08 13:05:39 发布

zem_nezer

最新推荐文章于 2024-11-08 13:05:39 发布

阅读量92

点赞数

CC 4.0 BY-SA版权

分类专栏：算法

本文链接：https://blog.youkuaiyun.com/zem_nezer/article/details/85062851

算法专栏收录该内容

185 篇文章

订阅专栏

本文探讨了二分查找算法中确定目标元素最左和最右位置的技巧。当目标等于中间元素时，为了找到最左边界，指针应尝试向左移动；对于最右边界，应让范围尽可能宽。这些技巧对于实现精确的二分查找非常重要。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

The problem is not too difficult than previous one, for the leftmost index, assign right = mid - 1 when target == nums[mid] in order to let the pointer try to move left as it can; for the rightmost use the similar one, left = mid + 1 when target == nums[mid] and let the range as right as we can.