def put_event(self, event):
"""
Insert events into self.map and prune oldest events if they exceed the size limit.
Args:
event: dict event to be tracked. Its integrity is validated by validate_input
Returns:
"""
try:
current_timestamp_in_sec = int(
datetime.now(tz=timezone.utc).timestamp())
if not self.queue:
self.queue.append(current_timestamp_in_sec)
elif current_timestamp_in_sec not in self.queue:
if current_timestamp_in_sec > self.queue[-1]:
self.queue.append(current_timestamp_in_sec)
else:
# Handle the case when timestamp is out of sync
bisect.insort(self.queue, current_timestamp_in_sec)
self.map[current_timestamp_in_sec] += 1
if len(self.queue) > self.maxsize:
expired = self.queue.popleft()
del self.map[expired]
return {
"error_code": SUCCESS["code"],
"error_message": SUCCESS["message"]
}
except Exception:
return {
"error_code": INSERT_EVENT_FAILED["code"],
"error_message": INSERT_EVENT_FAILED["message"]
}
def maxSumSubmatrix(self, matrix: List[List[int]], k: int) -> int:
"""
思路：
1. 先计算二维前缀和presum
2. 固定上下界，列坐标从左至右扫描，找到presum[j+1][r]-presum[i][l]<=k的最大值，即presum[i][l] >= presum[j+1][r]-k的最大值
我们先将presum[j+1][r]-k有序插入arr中，每次遍历一个值后再arr中二分查找
@param matrix:
@param k:
@return:
"""
m, n = len(matrix), len(matrix[0])
presum = [[0] * (n + 1) for _ in range(m + 1)]
for i in range(m):
for j in range(n):
presum[i + 1][j + 1] = presum[i][j + 1] + presum[i + 1][j] + matrix[i][j] - presum[i][j]
print(presum)
res = float('-inf')
# presum[i][r]-presum[i][l]<=k
# 枚举上行
for i in range(m):
# 枚举下行
for j in range(i, m):
arr = [0]
for r in range(n):
t = presum[j + 1][r + 1] - presum[i][r + 1]
index = bisect.bisect_left(arr, t - k)
if index < len(arr):
res = max(res, t - arr[index])
bisect.insort(arr, t)
return res
def diagonalSort(self, mat: List[List[int]]) -> List[List[int]]:
dic = collections.defaultdict(list)
m, n = len(mat), len(mat[0])
for i in range(m):
for j in range(n):
bisect.insort(dic[i - j], mat[i][j])
res = [[0] * n for _ in range(m)]
for i in range(m):
for j in range(n):
res[i][j] = dic[i - j].pop(0)
return res
def mostVisitedPattern(self, u: List[str], t: List[int], w: List[str]) -> List[str]:
n = len(u)
dic = collections.defaultdict(list)
for i in range(n):
bisect.insort(dic[u[i]], (t[i], w[i]))
name = collections.defaultdict(set)
for k, v in dic.items():
for t in itertools.combinations([b for a, b in v], 3):
name[t].add(k)
return sorted(name.items(), key=lambda x: (-len(x[1]), x[0]))[0][0]
def maxSlidingWindow(self, nums: List[int], k: int) -> List[int]:
result = []
tmp = sorted(nums[:k])
result.append(tmp[-1])
for i in range(1, len(nums) - k + 1):
tmp.pop(bisect.bisect_left(tmp, nums[i - 1]))
bisect.insort(tmp, nums[i + k - 1])
result.append(tmp[-1])
return result
def rectangleArea(self, rectangles: List[List[int]]) -> int:
def total_width_after_merge(itvls):
sorted_intervals = sorted(itvls + [[float("inf"), float("inf")]])
s, e = sorted_intervals[0][0], sorted_intervals[0][1]
res = []
for cs, ce in sorted_intervals[1:]:
if cs > e:
res.append([s, e])
s, e = cs, ce
else:
e = max(ce, e)
return sum(e - s for s, e in res)
total_area = 0
MOD = 10**9 + 7
y2x_itvls = defaultdict(deque)
for x1, y1, x2, y2 in rectangles:
if y1 != y2:
bisect.insort(y2x_itvls[y1], (1, x1, x2))
bisect.insort(y2x_itvls[y2], (-1, x1, x2))
sorted_yvals = sorted(y2x_itvls.keys())
prev_y = sorted_yvals[0]
active_itvls = []
for y in sorted_yvals:
while y2x_itvls[y]:
typ, xs, xe = y2x_itvls[y].popleft()
height = y - prev_y
total_area += (total_width_after_merge(active_itvls) * height)
if typ == 1:
active_itvls.append([xs, xe])
else:
active_itvls.remove([xs, xe])
prev_y = y
return total_area % MOD
def medianSlidingWindow(self, nums: List[int], k: int) -> List[float]:
result = []
def median(l):
if len(l) % 2 == 1:
return l[len(l) // 2]
else:
return (l[len(l) // 2 - 1] + l[len(l) // 2]) / 2
tmp = sorted(nums[:k])
result.append(median(tmp))
for i in range(1, len(nums) - k + 1):
tmp.pop(bisect.bisect_left(tmp, nums[i - 1]))
bisect.insort(tmp, nums[i + k - 1])
result.append(median(tmp))
return result
def closestRoom(self, rooms: List[List[int]],
queries: List[List[int]]) -> List[int]:
"""
思路：离线化，将查询数组和事物数组排序，降低时间复杂度（写了题解）
@param rooms:
@param queries:
@return:
"""
# from sortedcontainers import SortedSet
m, n = len(rooms), len(queries)
# 将rooms和queries按照size从大到小排序
rooms.sort(key=lambda x: x[1], reverse=True)
index = sorted(range(n), key=lambda i: queries[i][1], reverse=True)
ids = []
j = 0
res = [-1] * n
for i in index:
preferred, minSize = queries[i]
while j < m and rooms[j][1] >= minSize:
bisect.insort(ids, rooms[j][0])
j += 1
if not ids:
continue
k = bisect.bisect_left(ids, preferred)
if k == 0:
res[i] = ids[0]
elif k == len(ids):
res[i] = ids[-1]
else:
if abs(ids[k] - preferred) < abs(ids[k - 1] - preferred):
res[i] = ids[k]
else:
res[i] = ids[k - 1]
return res
if root is None:
return
# If this is the last node of its level
if (max_level[0] < level):
print "%d " %(root.data),
max_level[0] = level
# Recur for right subtree first, then left subtree
rightViewUtil(root.right, level+1, max_level)
rightViewUtil(root.left, level+1, max_level)
l = []
for _ in xrange(n):
bisect.insort(l, input())
print '{:.1f}'.format(medium(l))
d = deque(seq[0:M])
Counter(d).most_common(1)[0][0]
def factors(n):
return set(reduce(list.__add__,
([i, n//i] for i in range(1, int(n**0.5) + 1) if n % i == 0)))
def grade(score, breakpoints=[60, 70, 80, 90], grades='FDCBA'):
i = bisect(breakpoints, score)
return grades[i]
[grade(score) for score in [33, 99, 77, 70, 89, 90, 100]]
import random
import bisect
SIZE = 7
random.seed(1)
my_list = []
for i in range(SIZE):
new_item = random.randrange(SIZE * 2)
bisect.insort(my_list, new_item)
print('%2d ->' % new_item, my_list)
l = [28, 14, '28', 5, '9', '1', 0, 6, '23', 19]
import collections
collections.UserDict()
class StrKeyDict0(dict):
def __missing__(self, key):
if isinstance(key, str):
raise KeyError(key)
return self[str(key)]
def get(self, key, default=None):
try:
# 3. Write a Python program to insert items into a list in sorted order.
# Expected Output:
# Original List:
# [25, 45, 36, 47, 69, 48, 68, 78, 14, 36]
# Sorted List:
# [14, 25, 36, 36, 45, 47, 48, 68, 69, 78]
import bisect
# Sample list
my_list = [25, 45, 36, 47, 69, 48, 68, 78, 14, 36]
print("Original List:")
print(my_list)
sorted_list = []
for i in my_list:
position = bisect.bisect(sorted_list, i)
bisect.insort(sorted_list, i)
print("Sorted List:")
print(sorted_list)
# 4. Write a Python program to find the first occurrence of a given number in a sorted list using Binary Search(bisect).
# Expected Output:
# First occurrence of 8 is present at index 4
from bisect import bisect_left
def Binary_Search(a, x):
i = bisect_left(a, x)
if i != len(a) and a[i] == x:
return i
else:
return -1
breakpoints = [30, 44, 66, 75, 85]
def grade(total):
return grades[bisect(breakpoints, total)]
grade_map = map(grade, [33, 99, 77, 44, 12, 88])
grade_map
list(grade_map)
#%%
import bisect
import random
random.seed(3)
l = []
for i in range(10):
r = random.randint(1, 50)
pos = bisect.bisect_left(l, r)
bisect.insort_left(l, r)
print('%2d %2d' % (r, pos), l)
#%%
import bisect
import random
random.seed(3)
l = []
for i in range(10):
r = random.randint(1, 50)
pos = bisect.bisect(l, r)
bisect.insort(l, r)
print('%2d %2d' % (r, pos), l)
def addNum(self, num: int) -> None:
bisect.insort(self.arr, num)
