Python中优先级队列中的二维数组
我需要创建如下内容:Python中优先级队列中的二维数组,python,arrays,queue,priority-queue,Python,Arrays,Queue,Priority Queue,我需要创建如下内容: _______ |A: 15| |A: 45| |D: 55| |A: 45| |D: 65| (...) 这就好像它有一个由两个位置组成的数组(或一个字典),其中“a”与一个值关联,而“D”与其他值关联。这些,将被放置在一个队列中,稍后将被排序。创建、放入队列、go get事件和其他我已经找到并展示的内容的部分如下: class PriorityQueue(object): def __init__(self): self.queue =
_______
|A: 15|
|A: 45|
|D: 55|
|A: 45|
|D: 65|
(...)
这就好像它有一个由两个位置组成的数组(或一个字典),其中“a”与一个值关联,而“D”与其他值关联。这些,将被放置在一个队列中,稍后将被排序。创建、放入队列、go get事件和其他我已经找到并展示的内容的部分如下:
class PriorityQueue(object):
def __init__(self):
self.queue = []
def __str__(self):
return ' '.join([str(i) for i in self.queue])
# for checking if the queue is empty
def isEmpty(self):
return len(self.queue) == []
# for inserting an element in the queue
def insert(self, data):
self.queue.append(data)
# for popping an element based on Priority
def delete(self):
try:
max = 0
for i in range(len(self.queue)):
if self.queue[i] < self.queue[max]:
max = i
item = self.queue[max]
del self.queue[max]
return item
except IndexError:
print()
exit()
我需要它来获取优先级最低的事件,并检查它是“A”还是“D”请查看以下代码(Python 3):
请看下面的代码(Python 3):
myQueue = PriorityQueue()
myQueue.insert(12)
myQueue.insert(1)
myQueue.insert(14)
myQueue.insert(7)
print(myQueue)
while not myQueue.isEmpty():
print(myQueue.delete())
class PriorityQueue(object):
def __init__(self):
self.queue = []
def __str__(self):
return "\n".join(["\n".join(["{0}: {1}".format(key, pair[key]) for key in pair]) for pair in self.queue])
# for checking if the queue is empty
def isEmpty(self):
return len(self.queue) == 0
# for inserting an element in the queue
def insert(self, data):
if (type(data) == dict) and (len(data) == 1):
new_key = list(data.keys())[0]
if (type(new_key) == str) and (type(data[new_key]) == int):
self.queue.append(data)
# for popping an element based on Priority
def delete(self):
if self.isEmpty():
return [None, None]
max_index = None
max_int = None
max_key = None
for i in range(len(self.queue)):
pair_key = list(self.queue[i].keys())[0]
pair_int = self.queue[i][pair_key]
if (max_index == None) or (pair_int < max_int):
max_index = i
max_int = pair_int
max_key = pair_key
del self.queue[max_index]
return [max_key, max_int]
def main():
myQueue = PriorityQueue()
myQueue.insert({"A": 15})
myQueue.insert({"A": 45})
myQueue.insert({"D": 55})
myQueue.insert({"A": 35})
myQueue.insert({"D": 65})
myQueue.insert({"D": -10})
print(myQueue)
while not myQueue.isEmpty():
key, value = myQueue.delete()
if key:
print("Delete {0} associated to {1}".format(value, key))
A: 15
A: 45
D: 55
A: 35
D: 65
D: -10
Delete -10 associated to D
Delete 15 associated to A
Delete 35 associated to A
Delete 45 associated to A
Delete 55 associated to D
Delete 65 associated to D