There are 8 prison cells in a row, and each cell is either occupied or vacant. Each day, whether the cell is occupied or vacant changes according ...
題目如下: There are prison cells in a row, and each cell is either occupied or vacant. Each day, whether the cell is occupied or vacant changes according to the following rules: If a cell has two adjacent ...
2018-12-18 10:35 0 1139 推薦指數:
There are 8 prison cells in a row, and each cell is either occupied or vacant. Each day, whether the cell is occupied or vacant changes according ...
Given the head of a linked list and two integers m and n. Traverse the linked list and remove some nodes in the following way: Start ...
題目如下: Given n and m which are the dimensions of a matrix initialized by zeros and given an array indices where indices[i] = [ri, ci ...
LeetCode wants to give one of its best employees the option to travel among N cities to collect algorithm problems. But all work and no play makes ...
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n ...
957. N 天后的牢房 思路: 模擬變換,當N天結合后返回 => 當N非常大的時候,超時 => 一般N很大的時候,這種題目必然存在循環,所以記錄找過的狀態,一旦出現已經訪問過的狀態可立即跳出循環。 825. 適齡的朋友 思路: 最直觀的就是兩層循環暴力,意料之中 ...
Hard! 題目描述: n 皇后問題研究的是如何將 n 個皇后放置在 n×n 的棋盤上,並且使皇后彼此之間不能相互攻擊。 上圖為 8 皇后問題的一種解法。 給定一個整數 n,返回所有不同的 n 皇后問題的解決方案。 每一種解法包含一個明確的 n 皇后問題的棋子放置方案,該方案中 'Q ...
題目: 分析:很顯然不能用時間復雜度為O(N2)的暴力窮舉法,下面先給出一個運行時間為102ms的AC答案: 上面的答案雖然AC了,但若原始海量數據本身是降序排列時,再運行時間也為O(N2),下面給出運用樹狀數組(Binary Indexed Tree ...