https://leetcode.com/problems/find-in-mountain-array/ 题意:给定一个MountainArray(定义见题目),找到其中最早出现的target值的下标。 MountainArray.get() 函数调用不能超过100次。 解法:首先使用Binary Search找到mountain的peak,将array分为一个严格递增和一个严格递减的array,然后使用Binary Search。 classSolutio...
我的题解代码如下,在leetcode上运行时间4ms,内存占用6MB intBiSearch_Increase(MountainArray* mountainArr,intfirst,intend,inttarget){//从小到大顺序intmid=(first+end)/2;while(first<=end){if(target<get(mountainArr,mid)) end=mid-1;elseif(target==get(mountainArr,mid))returnmid;elsefirst=mid+1;...
你将 不能直接访问该山脉数组,必须通过 MountainArray 接口来获取数据: MountainArray.get(k)- 会返回数组中索引为k 的元素(下标从 0 开始) MountainArray.length()- 会返回该数组的长度 注意: 对MountainArray.get 发起超过 100 次调用的提交将被视为错误答案。此外,任何试图规避判题系统的解决方案都将会导致...
idx: binSearch(mountainArr, peakIdx + 1, mountainArr.length() - 1, target, false); } int binSearch(MountainArray mountainArr, int lo, int hi, int target, bool asc) { while (lo <= hi) { int mid = lo + (hi - lo) / 2; int midVal = mountainArr.get(mid); if (midVal =...
leetcode-34. Find First and Last Position of Element in Sorte-binary-searchyjhycl 立即播放 打开App,流畅又高清100+个相关视频 更多 84 0 18:47 App leetcode-222-Counter Complete Binary Tree Nodes - binary search 2 0 10:00 App leetcode-852. Peak Index in a Mountain Array -binary-search...
LeetCode 852. Peak Index in a Mountain Array 2019-12-21 09:43 − 原题链接在这里:https://leetcode.com/problems/peak-index-in-a-mountain-array/ 题目: Let's call an array A a mountain if the following proper... Dylan_Java_NYC 0 241 ...
链接:https://leetcode.cn/problems/find-in-mountain-array 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 思路 做这个题如果对山脉数组的定义不是很明确,可以先做一下852题。这个题可以跟162,852一起做。山脉数组就是只有一个峰值 peak,峰值左边的元素是单调递增的,右边的元素是单调递减...
}returnmountainArr.get(right) == target ? right :-1; } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/1095 类似题目: Longest Mountain in Array Peak Index in a Mountain Array Find Minimum in Rotated Sorted Array
Explanation: 3 does not exist inthearray,so we return -1. Constraints: 3 <= mountain_arr.length() <= 10000 0 <= target <= 10^9 0 <= mountain_arr.get(index) <= 10^9 解题思路:我的解法是二分查找。mountain array 数组的特点是有一个顶点,顶点左边的区间是单调递增,右边的区间是单调递减...
Peak Index in a Mountain Array Find a Peak Element II Pour Water Between Buckets to Make Water Levels Equal Count Hills and Valleys in an Array 参考资料: https://leetcode.com/problems/find-peak-element https://leetcode.com/problems/find-peak-element/discuss/50232/find-the-maximum-by-binary...