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平衡三进制

Posted by 200730690105 at 2009-01-16 19:30:37 on Problem 1702
将n用-1,0,1表示,如20=1*3^3+(-1)*3^2+1*3^1+(-1)*3^0
所以20+3^0+3^2=3^1+3^3
即1,9 3,27

平衡三进制具体转化方法
先转化为用0,1,2表示的3进制,然后通过“借位”转换
若对应的系数为2,则变为-1,下一位+1
若对应的系数为3,则变为0,下一位+1
为0或1时不变

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