原题链接在这里:https://leetcode.com/problems/number-of-ways-to-build-house-of-cards/description/ 题目: You are given an integernrepresenting the number of playing cards you have. A house of cards meets the following conditions: A house of cards consists of one or more rows of triangles a...
So let's define dp[i] as the number of ways to have all picked people in state i all wear distinct hats. Then we loop through all possible hats, for each hat that is being added, loop through all possible people states, for each state, if there are unpicked people that can wear t...
2912.在网格上移动到目的地的方法数 力扣(LeetCode)官网 - 全球极客挚爱的技术成长平台leetcode.cn/problems/number-of-ways-to-reach-destination-in-the-grid/ 题目只允许横向和纵向两种方式进行移动,那么在这里就可以先将横向和纵向分开来计数,也就是说,从0到k枚举横移的次数p,那么纵移的次数就是k - p...
本题代码和文字解析: https://github.com/wisdompeak/LeetCode/tree/master/Dynamic_Programming/1639.Number-of-Ways-to-Form-a-Target-String-Given-a-Dictionary残酷刷题群:https://wisdompeak.github.io/lc-score-board/视频专辑列表
Return the number of ways of cutting the pizza such that each piece containsat leastone apple.Since the answer can be a huge number, return this modulo 10^9 + 7. Example 1: Input:pizza = ["A..","AAA","..."], k = 3Output:3Explanation:The figure above shows the three ways to...
Can you solve this real interview question? Number of Ways to Paint N × 3 Grid - You have a grid of size n x 3 and you want to paint each cell of the grid with exactly one of the three colors: Red, Yellow, or Green while making sure that no two adjacent
https://leetcode.cn/problems/number-of-ways-to-reconstruct-a-tree 这道题曾经在周赛难度分top1呆了几年,如今已经不在难度分top5了。破局的关键是父节点的邻居数肯定不少于子节点,而根节点的邻居数一定是n-1。所以应该先找到根节点,然后逐层向下建树,子节点的邻居一定是父节点的子集,否则就是非法;如果子...
祖传的手艺不想丢了,所以按顺序写一个leetcode的题解。计划每日两题,争取不卡题吧。 1444.切披萨的方案数 力扣leetcode-cn.com/problems/number-of-ways-of-cutting-a-pizza/ 由于每次切割只能横切或者纵切,同时每次都会留下下面或者右边的部分,那么很自然想到使用动态规划,令f[c][i][j]表示对于以(i, ...
Given a non-empty string containing only digits, determine the total number of ways to decode it. Example 1: Input: “12” Output: 2 Explanation: It could be decoded as “AB” (1 2) or “L” (12). Example 2: Input: “226” ...
给定一个只包含数字的非空字符串,请计算解码方法的总数。 示例1: 输入: "12" 输出: 2 解释: 它可以解码为 "AB"(1 2)或者 "L"(12)。 示例2: 输入: "226" 输出: 3 解释: 它可以解码为 "BZ" (2 26), "VF" (22 6), 或者 "BBF" (2 2 6) ...