题目描述
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.
解法一:循环法
# -*- coding:utf-8 -*-
class Solution():
def printMatrix(self,matrix):
result = []
while matrix:
result += matrix.pop(0)
if matrix:
matrix = self.rotate(matrix)
return result
def rotate(self,matrix):
row = len(matrix)
col = len(matrix[0])
new_matrix = []
for i in range(col):
new_line = []
for j in range(row):
new_line.append(matrix[j][col-1-i])
new_matrix.append(new_line)
return new_matrix