1. 题目 2. 解答 2.1 方法一 left 数组表示当前元素左边比当前元素小的元素个数,right 数组数组表示当前元素右边比当前元素小的元素个数.在山脉的中间 B[i] 处,其左边和右边肯定都有小于 B[i] 的元素,而山脉的长度即为 left[i] + right[i] + 1. class Solution { public: int longestMountain(vector<int>& A) { int n = A.size(); if (n < 3) retu
Let's call any (contiguous) subarray B (of A) a mountain if the following properties hold: B.length >= 3 There exists some 0 < i < B.length - 1 such that B[0] < B[1] < ... B[i-1] < B[i] > B[i+1] > ... > B[B.length - 1] (Note tha
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2],The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4.Your algorithm should run in O(
题目描写叙述: Write a function to find the longest common prefix string amongst an array of strings.就是给定1个字符串数组,找出公共最长前缀. 思路非常直接.使用1个索引来存最长公共前缀的长度就能够了. 注意, 假设使用1个字符串变量来存前缀的话,是不能AC的,由于题目不同意使用额外的空间. public string LongestCommonPrefix(string[] strs) { if(strs
Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2],The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. Your algorithm should run in
Let's call any (contiguous) subarray B (of A) a mountain if the following properties hold: B.length >= 3 There exists some 0 < i < B.length - 1 such that B[0] < B[1] < ... B[i-1] < B[i] > B[i+1] > ... > B[B.length - 1] (Note tha
Life Forms Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 16223 Accepted: 4763 Description You may have wondered why most extraterrestrial life forms resemble humans, differing by superficial traits such as height, colour, wrinkles, e