66/2=33 66%2=033/2=16 33%2=116/2=8 16%2=08/2=4 8%2=04/2=2 4%2=02/2=1 2%2=01/2=0 1%2=1十进制转二进制，除以2求余，再进行倒序，所以为1000010
