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Python 2022-03-04 23:20:02
defaultdict python inport
from collections import defaultdict Add solution -
Python 2022-02-25 20:05:04
kitty's calculations on a tree hackerrank solution
from collections import Counter, defaultdict MOD = 10**9 + 7 def read_row(): return (int(x) for x in input().split()) def mul(x, y): return (x * y) % MOD def add(*args): return sum(args) % MOD def sub(x, y): return (x - y) % MOD n, q... Add solution -
Other 2022-01-30 02:50:17
you are in charge of preparing a recently purchased lot
from collections import defaultdict from collections import deque def is_valid(i, j, m, n, matrix, visited): if i >= 0 and j >= 0 \ and i < m and j < n \ and visited[i][j] is False \ and matrix[i][j] ... Add solution -
Python 2022-01-29 04:46:39
dictionary changed size during iteration
# to avoid this problem, make a copy of keys: for i in list(d) # Can also solve this problem here: # https://leetcode.com/problems/binary-trees-with-factors/ arr = [2,4,5,10] dp = collections.defaultdict(int) # this would create error since dp[x/i] is... Add solution -
Python 2021-11-08 00:38:09
how to use multiple keys for single value in dictionary python
from collections import defaultdict data = [(2010, 2), (2009, 4), (1989, 8), (2009, 7)] d = defaultdict(list) print (d) # output --> defaultdict(<type 'list'>, {}) for year, month in data: d[year].append(month) print (d) # output -->... Add solution -
Python 2021-11-04 22:01:07
vs
import numpy as np import os import six.moves.urllib as urllib import sys import tarfile import tensorflow as tf import zipfile from collections import defaultdict from io import StringIO from matplotlib import pyplot as plt from PIL import Image &... Add solution
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