leetcode/draft.py

<<<<<<< HEAD
import numpy as np
n = 3
m = np.array(range(1, (n * n) + 1)).reshape(n, n)
print(m)
=======
s = "A man, a plan, a canal: Panama".lower()
b = ''.join(ch for ch in s if ch.isalnum()).lower()
print(b)

>>>>>>> 0ac0c7a7a7ace7b2c81857019fe6ed8ad32cad09