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N-Queens - The n-queens puzzle is the problem of placing n queens on an n x n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-queens puzzle.
N-Queens II - The n-queens puzzle is the problem of placing n queens on an n x n chessboard such that no two queens attack each other. Given an integer n, return the number of distinct solutions to the n-queens puzzle.
In-depth solution and explanation for LeetCode 51. N-Queens in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions.
N-Queens LeetCode Solution – The n-queens puzzle is the problem of placing n queens on a n x n chessboard such that no two queens attack each other. Given an integer n , return all distinct solutions to the n-queens puzzle .
class Solution: def solveNQueens (self, n: int)-> List [List [str]]: ans = [] cols = [False] * n diag1 = [False] * (2 * n-1) diag2 = [False] * (2 * n-1) def dfs (i: int, board: List [int])-> None: if i == n: ans. append (board) return for j in range (n): if cols [j] or diag1 [i + j] or diag2 [j-i + n-1]: continue cols [j] = diag1 [i + j ...
May 22, 2021 · Given an integer n, return all distinct solutions to the n-queens puzzle. Each solution contains a distinct board configuration of the n-queens' placement, where 'Q' and '.' both indicate a queen and an empty space, respectively.
Problem Statement. The n-queens puzzle is the problem of placing n queens on an n x n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-queens puzzle. You may return the answer in any order.
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Oct 3, 2023 · The N queens puzzle is the problem of placing N chess queens on an N×N chessboard so that no two queens threaten each other. Thus, a solution requires that no two queens share the same row, column, or diagonal.
Jan 20, 2016 · The n-queens puzzle is the problem of placing n queens on an n x n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-queens puzzle. You may return the answer in any order.
