输入：‘[[0,0,0,0],[1,0,0,1],[1,1,1,0]]’ 注意这个Python读进来是字符串。
输出：一个矩阵 [[0, 0, 0, 0], [1, 0, 0, 1], [1, 1, 1, 0]]
思路：先把所有数字拿出来，变成一个矩阵，然后我们找到矩阵的列数，然后重新reshape一下。
import sys
import numpy as np
string = sys.stdin.readline().strip()
arr = []
count = 0
for i in string:
try:
arr.append(int(i))
except:
if i == '[':
count += 1
pass
cols = int(len(arr)/count)
grid = []
cur = []
for i in arr:
if len(cur)<=cols:
cur.append(i)
else:
grid.append(cur)
cur = []
cur.append(i)
grid.append(cur)
print(grid)