23 lines
535 B
Python
23 lines
535 B
Python
#From: https://stackoverflow.com/questions/39964383/implementation-of-i2osp-and-os2ip
|
|
|
|
def i2osp(x, xLen):
|
|
if x >= 256**xLen:
|
|
raise ValueError("integer too large")
|
|
digits = []
|
|
|
|
while x:
|
|
digits.append(int(x % 256))
|
|
x //= 256
|
|
for i in range(xLen - len(digits)):
|
|
digits.append(0)
|
|
return digits[::-1]
|
|
|
|
def os2ip(X):
|
|
xLen = len(X)
|
|
X = X[::-1]
|
|
x = 0
|
|
for i in range(xLen):
|
|
x += X[i] * 256**i
|
|
return x
|
|
|