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python二维列表转置-ag真人游戏

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]

 

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