[Leetcode][python]N-Queens/N-Queens II/N皇后/N皇后 II N-Queens 题目大意 经典的八皇后问题的一般情况 注意点: 皇后用”Q”表示,空白用”.”表示 解题思路 回溯法,位运算等,见总结 代码 回溯法 使用一位数组存储可能的解法例如[1,3,0,2],最后再生成二位字符串图形 如图理解: 代码语言:javascript 代...
Given an integern, return all distinct solutions to then-queens puzzle. Each solution contains a distinct board configuration of then-queens' placement, where'Q'and'.'both indicate a queen and an empty space respectively. Example: Input:4 Output:[ [".Q..",// Solution 1"...Q","Q..."...
queenDFS(grid, 0, n,queen,output) return output def isQueenOk(self,grid,row,col): #纵向合法性校验 for i in range(row): if grid[i][col] == 'Q': return False #主对角线合法性校验 x = row - 1 y = col - 1 while x >= 0 and y >= 0: if grid[x][y] == 'Q': return...
Each solution contains a distinct board configuration of the n-queens’ placement, where ‘Q’ and ‘.’ both indicate a queen and an empty space respectively. For example, There exist two distinct solutions to the 4-queens puzzle: [ [".Q..", // Solution 1 "...Q", "Q...", "....
代码我都尽量详细注释,并且把重要变量print出来便于理解 经典回溯法问题,解法很多,不过无外乎递归非递归等。 看到用位计算的,以后学习参考,效率两道题目都是最高的。 https:///zhsj/nqueen/blob/master/N%E7%9A%87%E5%90%8E%E9%97%AE%E9%A2%
res.append(queens)returnrow=len(queens)forcolinrange(n):ifcolinqueensorrow+colinrcSumorrow-colinrcDiff:continuedfs(rcSum+[row+col], rcDiff+[row-col], queens+[col]) dfs([], [], [])returnres (C++) classSolution {public: vector<vector<string>> solveNQueens(intn) { ...
所以Problem 51 的 Python 代码如下: def NQueens(queenList,line): # 递归函数 # 当行数等于皇后数量时,记录结果 if line == queenNum: temp = [] for i in range(queenNum): s = '' for j in range(queenNum): if [i,j] in queenList: ...
java c++ python class Solution { /** * Get all distinct N-Queen solutions * @param n: The number of queens * @return: All distinct solutions * For example, A string '...Q' shows a queen on forth position */ List<List<String>> solveNQueens(int n) { // result用于存储答案 List<...
N-皇后的python解法, 从上到下每一行,从左到右每一列找一个放置皇后的合适的位置, 这个位置合适不合适,需要根据已经放置的皇后位置确定,即不能和其他皇后处于同一列,同一主副对角线上。 class Solution: def solveNQueens(self, n): ''' Args: n: int, number of queens ''' # temporary chess board,...
这里写自定义目录标题 //N皇后 #include<stdio.h> #include<stdlib.h> int a[200]; int total=0; void NQueen(int n,int Sumn); main(){ int Sumn; printf(“请输入皇后个数:\n”); scanf("%d",&Su... 【Spark2.0源码学习】-10.Task执行与回馈 ...