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什么是除2取余法
更新时间: 2020-10-12 00:00:00  

除2取余法是指把十进制的数化为二进制的数。

例如把89化为二进制的数:

89除以2等于44余1;

44除以2等于22余0;

22除以2等于11余0;

11除以2等于5余1;

5除以2等于2余1;

2除以2等于1余0;

1除以2等于0余1;

把余数由下往上排序:1011001,因此89的二进制表达方式为1011001。

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