def reverse(RevNum):
    Bin=[]
    BinStr=""
    for i in range(len(RevNum)-1,-1,-1):
        Bin.append(RevNum[i])
        BinStr=BinStr+str(RevNum[i])
    return Bin

e4998ba7356eea8b309a11f2f267cabf174cea1c
<mask token>

def reverse(RevNum):
    Bin = []
    BinStr = ''
    for i in range(len(RevNum) - 1, -1, -1):
        Bin.append(RevNum[i])
        BinStr = BinStr + str(RevNum[i])
    return Bin

def reverse(RevNum):
    Bin=[]
    BinStr=""
    for i in range(len(RevNum)-1,-1,-1):
        Bin.append(RevNum[i])
        BinStr=BinStr+str(RevNum[i])
    return Bin
