check equality with all 2's power
所在版块：求学狮城 发贴时间：2007-04-25 12:56

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programming puzzles － 吴永铮 　2007-04-24 17:12 (476 bytes , 731reads )
my answer to (4) － 吴永铮 　2007-04-27 21:56 (284 bytes , 253reads )
(Y) － hash 　2007-04-29 04:42 (0 bytes , 224reads )
what do you mean by classic way? － icky 　2007-04-25 11:33 (96 bytes , 263reads )
(3) can be done by less than 5 instructions － 吴永铮 　2007-04-25 12:26 (66 bytes , 253reads )
check equality with all 2's power － icky 　2007-04-25 12:56 (31 bytes , 290reads )
can be simpler and faster － 吴永铮 　2007-04-25 15:26 (0 bytes , 224reads )
先模1<<16和除 1<<16 － icky 　2007-04-25 16:46 (130 bytes , 245reads )
(num > 0) && (((num - 1) & num) == 0) ? － 这就是生活 　2007-04-26 00:31 (0 bytes , 259reads )
correct － 吴永铮 　2007-04-26 00:50 (177 bytes , 231reads )
opps ^ is wrong. It's always true. － 吴永铮 　2007-04-26 01:06 (0 bytes , 242reads )
i was thinking of checking bit also. － hash 　2007-04-25 11:36 (18 bytes , 255reads )
interesting... let me try 1&2... － hash 　2007-04-24 18:10 (106 bytes , 378reads )
oh, i was thinking using while － icky 　2007-04-25 11:34 (55 bytes , 301reads )
世界真奇妙 － soc胖浪人 　2007-04-25 00:27 (0 bytes , 200reads )