题目链接: https://leetcode.com/problems/remove-boxes/description/ 问题描述 若干个有序排列的box和它们的颜色,每次可以移除若干个连续的颜色相同的box,且得分为移除个数的平方,求最大的得分. n不超过100. 输入 输入n个箱子的颜色. 输出 输出最大的得分. 样例输入 1, 3, 2, 2, 2, 3, 4, 3, 1 样例输出 23 题解 令dp[l][r][k]表示前面有k个和box[l]同颜色的要和box[l]一起消除,现在考虑…

Leetcode546 给定一个整数序列,每次删除其中连续相等的子序列,得分为序列长度的平方 求最高得分. dp方程如下: memo[l][r][k] = max(memo[l][r][k], dfs(boxes,memo,l,i,k+1) + dfs(boxes,memo,i+1,r-1,0)); 意思是在序列的l-r部分后接k长度的 r值序列 所能得到的最大得分. 代码很简单 class Solution { public: int removeBoxes(vector<int>&…

Given several boxes with different colors represented by different positive numbers. You may experience several rounds to remove boxes until there is no box left. Each time you can choose some continuous boxes with the same color (composed of k boxes…

给定一些不同颜色的盒子,以不同的正整数表示.消去连续相同颜色的盒子,直到全部消除完毕为止.每一次消去可以得到k * k分(k为消去盒子的个数, k  >= 1).计算可以得到的最大得分.注意:盒子的数量n不超过100. 详见:https://leetcode.com/problems/remove-boxes/description/ C++: class Solution { public: int removeBoxes(vector<int>& boxes) { int n…

Given several boxes with different colors represented by different positive numbers. You may experience several rounds to remove boxes until there is no box left. Each time you can choose some continuous boxes with the same color (composed of k boxes…

Given several boxes with different colors represented by different positive numbers. You may experience several rounds to remove boxes until there is no box left. Each time you can choose some continuous boxes with the same color (composed of k boxes…

LeetCode 80 Remove Duplicates from Sorted Array II [Array/auto] <c++> 给出排序好的一维数组,如果一个元素重复出现的次数大于两次,删除多余的复制,返回删除后数组长度,要求不另开内存空间. C++ 献上自己丑陋无比的代码.相当于自己实现一个带计数器的unique函数 class Solution { public: int removeDuplicates(std::vector<int>& nums) {…

LeetCode 26 Remove Duplicates from Sorted Array [Array/std::distance/std::unique] <c++> 给出排序好的一维数组,删除其中重复元素,返回删除后数组长度,要求不另开内存空间. C++ 很简单的题目,但是第一发RE了,找了很久问题出在哪.最后单步调试发现vector.size()返回值是unsigned型的.unsigned型和int型数据运算结果还是unsigned型的.这就导致当数组为空时,nums.size(…

https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii/discuss/27976/3-6-easy-lines-C%2B%2B-Java-Python-Ruby 描述 Follow up for "Remove Duplicates":What if duplicates are allowed at most twice? For example,Given sorted array A = [1,1…

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinctnumbers from the original list. Example 1: Input: 1->2->3->3->4->4->5 Output: 1->2->5 Example 2: Input: 1->1->1->2->3 Output…

Leetcode练习题Remove Element Question: Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with…

Given a sorted array nums, remove the duplicates in-place such that duplicates appeared at most twice and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra mem…

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. For example,Given 1->2->3->3->4->4->5, return 1->2->5.Given 1->1->1->2->3, return 2->3.…

题目描述: Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. For example,Given input array…

https://leetcode.com/problems/remove-duplicate-letters/ Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical o…

题目在这里: https://leetcode.com/problems/remove-nth-node-from-end-of-list/ [标签] Linked List; Two Pointers [个人分析] 这个题目应该算是Linked List里面的基础题.说它基础不是因为它简单,而是因为它是基石.一些 Linked list中经典方法在这道题里面都有应用. 1. Two Pointers 在 Linked List中: 如果能预先链表知道长度,那题目就简单多了,删掉从头开始的 Le…

Follow up for "Remove Duplicates":What if duplicates are allowed at most twice? For example,Given sorted array nums = [1,1,1,2,2,3], Your function should return length = 5, with the first five elements of nums being 1, 1, 2, 2 and 3. It doesn't…

Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. The order of elements can be changed. It doesn't matter…

Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. For example,Given input array nums …

很久没写博客了,越来越懒了,这次还是要分享LeetCode上一道动态规划的题目,和之前的Ballon Boom那个题(我记得是这个标题吧...)差不多,都是对一个数组的区间进行枚举的题,而且涉及到区间和子区间取值的问题,不过那个题和矩阵链乘法基本是一样的, 这个题的话相对来说更难一点,因为这个题需要对一个三维的dp数组进行维护,最后一个维度的考虑是比较难的.直接提供代码,思路以后有时间再补: class Solution { public int removeBoxes(int[] boxes)…

[LeetCode] Remove Duplicates from Sorted Array 有序数组中去除重复项 描述 Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this…

Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 --> 3 --> 4 --> 5 题目标签:Linked List 题目给了我们一个 链表 和一个 val,让我们把链表中 等于 val 的点都去除.…

Start from integer 1, remove any integer that contains 9 such as 9, 19, 29... So now, you will have a new integer sequence: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, ... Given a positive integer n, you need to return the n-th integer after removing. Note that…

Given a non-negative integer num represented as a string, remove k digits from the number so that the new number is the smallest possible. Note: The length of num is less than 10002 and will be ≥ k. The given num does not contain any leading zero. Ex…

Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other than the parentheses ( and ). Example 1: Input: "()())()" Output: ["()()…

Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 这道题让我们移除给定有序链表的重复项,那么可以遍历这个链表,每个结点和其后面的结点比较,如果结点值相…

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Example 1: Input: 1->2->3->3->4->4->5 Output: 1->2->5 Example 2: Input: 1->1->1->2->3 Outpu…

Given a sorted array nums, remove the duplicates in-place such that duplicates appeared at most twice and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra mem…

Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. The order of ele…

Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.…