标签:二维 utf-8 turn 顺时针 题目 返回 == solution append
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.
python solution:
# -*- coding:utf-8 -*-
class Solution:
# matrix类型为二维列表,需要返回列表
def printMatrix(self, matrix):
a,b,c,d = 0,0,len(matrix),len(matrix[0])
res = [matrix[0][0]]
dir = 0
i,j = 0,0
while len(res)<(len(matrix)*len(matrix[0])):
if dir == 0: #从左向右走
while j<d-1:
j += 1
# print(matrix[i][j])
res.append(matrix[i][j])
a += 1
dir = 1
continue
if dir == 1: #从上向下走
while i+1<c:
i += 1
# print(matrix[i][j])
res.append(matrix[i][j])
d -= 1
dir = 2
continue
if dir == 2: #从右向左走
while j-1>=b:
j -= 1
# print(matrix[i][j])
res.append(matrix[i][j])
c -= 1
dir = 3
continue
if dir == 3: #从下向上走
while i-1>=a:
i -= 1
# print(matrix[i][j])
res.append(matrix[i][j])
b += 1
dir = 0
continue
return res
标签:二维 utf-8 turn 顺时针 题目 返回 == solution append
原文地址:https://www.cnblogs.com/bernieloveslife/p/10424045.html