题目: There is an integer array which has the following features: The numbers in adjacent positions are different. A[0] < A[1] && A[A.length - 2] > A[A.length - 1]. We define a position P is a peek if: A[P] > A[P-1] && A[P] > A[P…
[LeetCode]162. Find Peak Element 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/find-peak-element/description/ 题目描述: A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], fi…
题目地址: https://oj.leetcode.com/problems/find-peak-element/ 题目内容: A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple pe…
Find Peak Element A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its index. You may imagine that num[-1] = num[n] = -∞. For example, in array [1, 2, 3, 1],…
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[LeetCode]556. Next Greater Element III 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/next-greater-element-iii/description/ 题目描述: Given a positive 32-bit integer n, you need…
[LeetCode]378. Kth Smallest Element in a Sorted Matrix 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/description/ 题目描述: Given a n x n matrix where each of the rows and columns are sorted in ascen…
Find Peak Element A peak element is an element that is greater than its neighbors. Given an input array nums, where nums[i] ≠ nums[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to…
[题目]C. Maximum Element [题意]给定n和k,定义一个排列是好的当且仅当存在一个位置i,满足对于所有的j=[1,i-1]&&[i+1,i+k]有a[i]>a[j],求长度为n的好的排列数.n<=10^6. [算法]排列组合+动态规划 [题解]设D(n)表示长度为n且满足a[n]=n的好的排列数,考虑这样的一个排列w. 如果数字n-1的位置j<n-k,那么显然这是一个好的排列. 如果数字n-1的位置j>=n-k,那么位置j前的数字一定<n-1…
Difficulty: Medium More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/kth-smallest-element-in-a-bst/ Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note: You may assume k is always va…
