852. Peak Index in a Mountain Array 没什么好说...852. Peak Index in a Mountain Array 题目地址:https://leetcode.com/problems/peak-index-in-a-mountain-array/description/ 大意:给一个峰值数列,返回峰值数的索引值 二分法 答案中还给了线性查找的方法,有兴趣的可以看看: 线性查找 The mountain ...
Find Peak Element 参考资料: https://leetcode.com/problems/peak-index-in-a-mountain-array/ https://leetcode.com/problems/peak-index-in-a-mountain-array/discuss/139848/C%2B%2BJavaPython-Better-than-Binary-Search LeetCode All in One 题目讲解汇总(持续更新中...)...
classSolution {publicintpeakIndexInMountainArray(int[] A) {if(A==null|| A.length==0){return0; }intleft = 0;intright = A.length-1;while(left<=right){intmid = (left+right)/2;if(A[mid-1]<A[mid] && A[mid]>A[mid+1]){returnmid; }elseif(A[mid-1]>A[mid]){ right= mid-...
Can you solve this real interview question? Peak Index in a Mountain Array - You are given an integer mountain array arr of length n where the values increase to a peak element and then decrease. Return the index of the peak element. Your task is to so
Leetcode-Easy 852. Peak Index in a Mountain Array,题目描述给一个数据A,其中A中第i个元素满足A[0]<A[1]<...A[i-1]<A[i]>A[i+1]>...>A[A.lenassSolution:defpea...
"852. Peak Index in a Mountain Array Easy" 方法一:二分查找 官方答案: java class Solution { public int peakIndexInMountainArray(int[] A) { int lo = 0, h
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class Solution{ public: int peakIndexInMountainArray(vector<int>& a){ int max_elem = *max_element(a.begin(), a.end()); int pos; for(pos = 0; pos < a.size(); ++pos){ if(a[pos] == max_elem) break; } return pos; } };...
classSolution {public:intpeakIndexInMountainArray(vector<int>&A) {intlen=A.size();for(inti=1;i<len-1;++i){if(A[i]>A[i-1] && A[i]>A[i+1]){returni; } }if(len>1&& A[len-1]>A[len-2])returnlen-1;return0; }
LeetCode 852 Peak Index in a Mountain Array 解题报告 题目要求 Let's call an arrayAa mountain if the following properties hold: A.length >= 3 There exists some0 < i < A.length - 1such thatA[0] < A[1] < ... A[i-1] < A[i] > A[i+1] > ... > A[A.length - 1]...