down = len(matrix)-1 right = len(matrix[0])-1 direct = 0 # 0: go right 1: go down 2: go left 3: go up res = [] while True: if direct == 0: for i in range(left, right+1): res.append(matrix[up][i]) up += 1 if direct == 1: for i in range(up, down+1): ...
Spiral Matrix II 螺旋矩阵 Given an integern, generate a square matrix filled with elements from 1 ton2 in spiral order. For example, Givenn=3, You should return the following matrix: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7, 6, 5 ] ] 看博客园有人面试碰到过这个问题,长篇大论看得...
Spiral Matrix II 题目大意 将一个正方形矩阵螺旋着填满递增的数字。 解题思路 螺旋填满数字 代码 代码语言:javascript 代码运行次数:0 运行 AI代码解释 class Solution(object): def generateMatrix(self, n): """ :type n: int :rtype: List[List[int]] """ if n == 0: return [] matrix = [[0...
matrix[bottom][i]=num num+=1 bottom-=1 foriinrange(bottom, top-1,-1): # bottom>top, col-left,left++ matrix[i][left]=num num+=1 left+=1 returnmatrix if __name__=="__main__": n=3 test=Solution() print(test.spiralMatrixII(n)) golang packagemain import"fmt" funcmain(){...
题目地址:https://leetcode.com/problems/spiral-matrix-ii/description/ 题目描述 Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example, Given n = 3, You should return the following matrix: ...
def spiral(n): M = [['.' for _ in range(n)] for _ in range(n)] for offset in range(0, (n+1)//2, 2): for i in range(offset, n-offset): # bottom side M[n-offset-1][i] = 'X' for i in range(offset, n-offset-1): # right side ...
# # # @param matrix int整型二维数组 # @return int整型一维数组 # class Solution: def spiralOrder(self , matrix ): # write code here if not matrix: return [] res = [] left,right,top,bottom = 0, len(matrix[0])-1, 0, len(matrix)-1 while left <= right and top <= bottom: f...
foriteminitems: ifitemnotinseen: yielditem seen.add(item) 扩展:由于Python中的集合底层使用哈希存储,所以集合的in和not in成员运算在性能上远远优于列表,所以上面的代码我们使用了集合来保存已经出现过的元素。集合中的元素必须是hashable对象,因此上面的代码在...
def show_spiral_matrix(n): matrix = [[0] * n for _ in range(n)] row, col = 0, 0 num, direction = 1, 0 while num <= n ** 2: if matrix[row][col] == 0:matrix[row][col] = num num += 1 if direction == 0:
57 LeetCode in Python 56. Merge Intervals 18:50 58 LeetCode Python 57 Insert Interval 05:29 59 LeetCode in Python 58. Length of Last Words 05:16 60 LeetCode in Python 59. Spiral Matrix II 17:52 61 LeetCode 60. Permutation Sequence _ python _ Chinese _ 中文 07:39 62 LeetCode in...