时间:2020-11-02 17:34:31 | 栏目:Python代码 | 点击:次
python 二维列表转置
def transpose(self, matrix): new_matrix = [] for i in range(len(matrix[0])): matrix1 = [] for j in range(len(matrix)): matrix1.append(matrix[j][i]) new_matrix.append(matrix1) return new_matrix
python 二维列表逆时针转置
def transpose(self, matrix): new_matrix = [] for i in range(len(matrix[0])): matrix1 = [] for j in range(len(matrix)): matrix1.append(matrix[j][i]) new_matrix.append(matrix1) return new_matrix[::-1]
例子:
输入一个矩阵,按照从外向里以顺时针的顺序依次打印出每一个数字,例如,如果输入如下4 X 4矩阵: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 则依次打印出数字1,2,3,4,8,12,16,15,14,13,9,5,6,7,11,10.
# -*- coding:utf-8 -*- class Solution: # matrix类型为二维列表,需要返回列表 # matrix应该是列表组成的列表 # 去掉首行,然后逆时针转置 def printMatrix(self, matrix): # write code here result = [] while matrix: result.extend(matrix.pop(0)) if not matrix: break matrix = self.transpose(matrix) return result # 转置 def transpose(self, matrix): new_matrix = [] for i in range(len(matrix[0])): matrix1 = [] for j in range(len(matrix)): matrix1.append(matrix[j][i]) new_matrix.append(matrix1) return new_matrix[::-1]