力扣leetcode-cn.com/problems/remove-boxes/ 游戏规则是比较简单的(类似于"消灭星星"), 但是找到最优解是比较困难的. 因为几乎没有限制条件. 先考虑最暴力的解法: 第i轮有Ni个选择, Ni为第i轮时的块数. 连续相同颜色的盒子构成一块, 1 <= Ni <= 100 最多有100轮. 总共的选择上界是100^100种. ...
https://leetcode.cn/problems/cat-and-mouse-ii/ 情况同913。但这道题更离谱的是,假设任意一方获胜都不需要2次经过相同位置,而对步数设上限的做法没有正确性,但8*8的棋盘内没有反例。所以DP做法是否算正解至今仍有争议。 Top22 3022 给定操作次数内使剩余元素的或值最小 https://leetcode.cn/problems/min...
I tried solving this problem on leetcode (https://leetcode.com/problems/dungeon-game/). I got AC with bottom up approach but wrong answer with top down approach. Can someone help me in proving why only bottom up approach works and not top down (tabulating values from top left to bottom...
classEditDistance{funcminDistance(word1:String,_ word2:String)->Int{letaChars=[Character](word1.characters)letbChars=[Character](word2.characters)letaLen=aChars.countletbLen=bChars.countvardp=Array(count:aLen+1,repeatedValue:(Array(count:bLen+1,repeatedValue:0)))foriin0...aLen{forjin0......
Leetcode - 最大子序和 https://leetcode-cn.com/problems/maximum-subarray/submissions/ 题目描述 给定一个整数数组nums,找到一个具有最大和的连续子数组(子数组最少包含一个元素),返回其最大和。 示例: 输入:[-2,1,-3,4,-1,2,1,-5,4],输出:6解释:连续子数组 [4,-1,2,1] 的和最大,为 6...
(repeating:false,count: pChars.count+ 1),count: sChars.count+ 1)dp[0][0] =trueforiin0...pChars.count{// jump over""vs."x*"casedp[0][i] = i == 0 || i > 1 && dp[0][i - 2] && pChars[i - 1] =="*"}foriin0...sChars.count{forjin0...pChars.count{guard j ...
https://leetcode.com/problems/department-top-three-salaries/ 3、题目内容 表Employee保存了所有雇员的数据,每名雇员都有一个Id,和一个部门Id(DepartmentId) +---+---+---+---+ |Id|Name|Salary|DepartmentId| +---+---+---+---+ |1|...
我们要做的就是比较min(dpLeft[i] ,dpRight[i]) - val[i] class Solution { public int trap(int[] height) { int n = height.length; if (n == 0) { return 0; } int[] leftMax = new int[n]; leftMax[0] = height[0];
https://leetcode.com/problems/decode-string/ 6. Insert into a BSTLoading... 7. LRU.Loading... we want O(1) lookup, so we need a hashmap; we want to move nodes to head/tail, we need double linked list. 8. Find repeated number ...
harshb910 / Dp-Problems Star 1 Code Issues Pull requests Contains Common Question from Dp leetcode cpp dynamic-programming gfg top-down-approach bottom-up-dp Updated Oct 24, 2021 C++ bobmwangih / Contract-First-WebService Star 0 Code Issues Pull requests This project host a simple...