Data Reverse

DESCRIPTION:

A stream of data is received and needs to be reversed.

Each segment is 8 bits long, meaning the order of these segments needs to be reversed, for example:

11111111  00000000  00001111  10101010
 (byte1)   (byte2)   (byte3)   (byte4)

should become:

10101010  00001111  00000000  11111111
 (byte4)   (byte3)   (byte2)   (byte1)

The total number of bits will always be a multiple of 8.

The data is given in an array as such:

[1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,1,0,1,0,1,0]

Note: In the C and NASM languages you are given the third parameter which is the number of segment blocks.

---

def data_reverse(data):
    count=0
    alist=[]
    blist=[]
    for i in range(int(len(data)/8)):
        for j in range(8):
            blist.append(data[(i*8)+j])
        alist.append(blist)
        blist=[]
    alist=alist[::-1]
    for i in range(len(alist)):
        for j in range(8):
            blist.append(alist[i][j])
    return blist