diff options
Diffstat (limited to 'users/wpcarro/scratch/facebook/heap.py')
-rw-r--r-- | users/wpcarro/scratch/facebook/heap.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/facebook/heap.py b/users/wpcarro/scratch/facebook/heap.py new file mode 100644 index 000000000000..0c0dce91b4dd --- /dev/null +++ b/users/wpcarro/scratch/facebook/heap.py @@ -0,0 +1,30 @@ +from math import floor + +class Heap(object): + def __init__(self): + self.xs = [None] + self.i = 1 + + def __repr__(self): + return "[{}]".format(", ".join(str(x) for x in self.xs[1:])) + + def insert(self, x): + if len(self.xs) == 1: + self.xs.append(x) + self.i += 1 + return + self.xs.append(x) + i = self.i + while i != 1 and self.xs[floor(i / 2)] > self.xs[i]: + self.xs[floor(i / 2)], self.xs[i] = self.xs[i], self.xs[floor(i / 2)] + i = floor(i / 2) + self.i += 1 + + def root(self): + return self.xs[1] + +xs = Heap() +print(xs) +for x in [12, 15, 14, 21, 1, 10]: + xs.insert(x) + print(xs) |