标签: 动态规划 描述: Given a sequence of integers, find the longest increasing subsequence (LIS). You code should return the length of the LIS. Clarification What's the definition of longest increasing subsequence? The longest increasing subsequence problem…

要求 给定一个整数序列,求其中的最长上升子序列长度 子序列元素可不相邻 元素相等不算上升 一个序列可能有多个最长上升子序列,但最长的长度只有一个 思路 暴力解法:选择所有子序列进行判断((2^n)*n) 动态规划(n^2) LIS(i):[0...i]范围内,选择数字nums[i]可以获得的最长上升子序列长度 LIS(i) = max( 1 + LIS(j) if nums[i] > nums[j] ) (j<i) 实现 1 class Solution { 2 public: 3 int l…

标签:动态规划 题目描述: Given two strings, find the longest common subsequence (LCS). Your code should return the length of LCS. 解题思路: 这一题是非常经典的动态规划问题,在解题思路上可以按照经典的动态规划的解法,这是在系统学习动态规划之后第一个解决的LintCode上的问题: 1.子问题划分 给出两个字符串的A,B,两个字符串长度分别为lenA,lenB,求出两个字符串的LCS: 这划…

最近开始刷lintcode,记录下自己的答案,数字即为lintcode题目号,语言为python3,坚持日拱一卒吧... (一). 回文字符窜问题(Palindrome problem) 627. Longest Palindrome 给出一个包含大小写字母的字符串.求出由这些字母构成的最长的回文串的长度是多少. 数据是大小写敏感的,也就是说,"Aa" 并不会被认为是一个回文串 输入 : s = "abccccdd" 输出 : 7 说明 : 一种可以构建出来的最长回…

标签:动态规划 题目描述: Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing…

提交地址: https://www.icpc-camp.org/contests/4rgOTH2MbOau7Z 题意: 给出一个整数数组,F[i]定义为以i结尾的最长上升子序列,然后问以此删除掉第i个数后F[1]^2 xor f[3]^2 xor .. xor F[n]^2 , 当然不会算删除的那个. n <= 5000 思路: 比赛的时候看完了觉得是个傻逼题,觉得n^2logn能够跑过不知道为啥这么少人交,然后兴致冲冲的敲了一发返回T才意识到没那么简单,题目是把log给卡了的,然后n^2肯定是…

标签: 动态规划 题目描述: There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color is different. You have to paint all the houses such that no two adjacent houses have the same color.…

标签: 动态规划 描述: Find the contiguous subarray within an array (containing at least one number) which has the largest product.   For example, given the array [2,3,-2,4], the contiguous subarray [2,3] has the largest product = 6. 解题思路: 前面几道题有点儿过分依赖答案了,后面还是…

标签:动态规划 题目描述: Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. Example For example, given the following matrix: 1 0 1 0 0 1 0 1 1 1 1 1 1 1 1 1 0 0 1 0 Return 4. 解题思路: 1.这一题明显使用动态规划来解题,…

标签:动态规划 描述: Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.) You have the following 3 operations permitted on a word: Insert a character Delete a character Re…