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HemantNegi/delta_encode.py

Created December 12, 2018 11:03
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Data encoding by difference
Raw
delta_encode.py
def delta_encode(array):
first = False
pre = None
diff = None
res = []
for i in array:
if not first:
res.append(i)
first = True
pre = i
else:
diff = i - pre
if not -127 <= diff <= 127:
res.append(-128)
res.append(diff)
pre = i
return res
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