Asubsequenceis an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements. A sequenceseqis arithmetic ifseq[i + 1] - seq[i]are all the s
Given an array A of integers, return the length of the longest arithmetic subsequence in A. Recall that a subsequence of A is a list A[i_1], A[i_2], …, A[i_k] with 0 <= i_1 < i_2 < … < i_k <= A.length - 1, and that a sequence B is arithmetic if B[i+1] -...
Given an integer array arr and an integer difference, return the length of the longest subsequence in arr which is an arithmetic sequence such that the difference between adjacent elements in the subsequence equals difference. Example 1: Input: arr = [1,2,3,4], difference = 1 Output: 4 Ex...
Given an integer array arr and an integer difference, return the length of the longest subsequence in arr which is an arithmetic sequence such that the difference between adjacent elements in the subsequence equals difference. Example 1: Input: arr = [1,2,3,4], difference = 1 Output: 4 Ex...
classSolution{public:intlongestSubsequence(vector<int>& arr,intdifference){intres =0; unordered_map<int,int> dp;for(inti : arr) { dp[i] =1+ dp[i - difference]; res =max(dp[i], res); }returnres; } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/1218 ...
LeetCode 300. Longest Increasing Subsequence 程序员木子 香港浸会大学 数据分析与人工智能硕士在读 来自专栏 · LeetCode Description Given an unsorted array of integers, find the length of longest increasing subsequence. Example: Input: [10,9,2,5,3,7,101,18]Output: 4Explanation: The ...
| LeetCode:674.最长连续递增序列,相信结合视频再看本篇题解,更有助于大家对本题的理解。思路本题相对于昨天的动态规划:300.最长递增子序列最大的区别在于“连续”。本题要求的是最长连续递增序列动态规划动规五部曲分析如下:确定dp数组(dp Python3 Java C++ 数组 11 2.1K 2...
674. Longest Continuous Increasing Subsequence 设f[i]为:以a[i]结尾的最长连续上升子序列的长度。因为子序列是“最长无重复子序列”,所以以a[i]结尾的最长连续上升子序列的倒数第二个元素必然是a[i - 1],否则就违背了“连续”。既然以a[i]结尾的最长连续上升子序列是最长的,那么如果它被减去a[i]这个元素...
一、题目描述 给定一个无序的整数数组,找到其中最长上升子序列的长度。 示例: 输入:[10,9,2,5,3,7,101,18]输出:4解释:最长的上升子序列是 [2,3,7,101],它的长度是 4。 二、代码实现 方法:动态规划法 LISList[i]表示到第i位时最长上升序列的长度。显然LISList[0] = 1。对于任意的i不为零的情况...
Can you solve this real interview question? Longest Palindromic Subsequence - Given a string s, find the longest palindromic subsequence's length in s. A subsequence is a sequence that can be derived from another sequence by deleting some or no elements