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Update MaxHeap.py #178

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14 changes: 7 additions & 7 deletions MaxHeap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
class MaxHeap:
def __init__(self, items=[]):
super().__init__()
self.heap = [0]
self.heap = None
for i in items:
self.heap.append(i)
self.__floatUp(len(self.heap) - 1)
Expand All @@ -18,18 +18,18 @@ def peek(self):
if self.heap[1]:
return self.heap[1]
else:
return False
return None

def pop(self):
if len(self.heap) > 2:
self.__swap(1, len(self.heap) - 1)
max = self.heap.pop()
max1 = self.heap.pop()
self.__bubbleDown(1)
elif len(self.heap) == 2:
max = self.heap.pop()
max1 = self.heap.pop()
else:
max = False
return max
max1 = None
return max1

def __swap(self, i, j):
self.heap[i], self.heap[j] = self.heap[j], self.heap[i]
Expand Down Expand Up @@ -57,4 +57,4 @@ def __bubbleDown(self, index):
m = MaxHeap([95, 3, 21])
m.push(10)
print(str(m.heap[0:len(m.heap)]))
print(str(m.pop()))
print(str(m.pop()))