classSolution{public:intfindInMountainArray(inttarget, MountainArray &mountainArr){intn = mountainArr.length(), left =0, right = n -1, peak =-1;while(left < right) {intmid = left + (right - left) /2;if(mountainArr.get(mid) < mountainArr.get(mid +1)) left = mid +1;elseright...
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...
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比赛资格被取消。 为了帮助大家更好地理解交互式问题,我们准备了一个样例 “答案”:https://leetcode-cn.com/playground/RKhe3ave,请注意这 不...
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 ...
leetcode【每日一题】1095. 山脉数组中查找目标值 Java 我的leetcode代码都已经上传到我的git 题干 (这是一个 交互式问题 ) 给你一个 山脉数组 mountainArr,请你返回能够使得 mountainArr.get(index) 等于 target 最小 的下标 index 值。 如果不存在这样的下标 index,就请返回 -1。 何为山脉数组?如果...
publicintfindInMountainArray(inttarget, MountainArray mountainArr){ intn=mountainArr.length(); intpeak=0; intmid=0; // find index of peak // 因为mid + 1可能会有越界的情况所以这里给了闭区间 // 下标都在index范围内 intleft=0; intright=n -1; ...
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;...
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...
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...