I want to do a bit operation, and need some help:
I have a word of 16 bit and want to split it into two, reverse each and then join them again.
Example if i have 0b11000011
First I divide it into 0b1100 and 0b0011
Then i reverse both getting 0b0011 and 0b1100
And finally rejoin them getting 0b00111100
Thanks!
Here's one way to do it:
def rev(n):
res = 0
mask = 0x01
while mask <= 0x80:
res <<= 1
res |= bool(n & mask)
mask <<= 1
return res
x = 0b1100000110000011
x = (rev(x >> 8) << 8) | rev(x & 0xFF)
print bin(x) # 0b1000001111000001
Note that the method above operates on words, not bytes as example in the question.
here are some basic operations you can try, and you can concatenate results after splitting your string in two and reversing it
a = "0b11000011" #make a string
b = a[:6] #get first 5 chars
c = a[::-1] # invert the string
