[測驗] 這不是腦筋急轉彎這是蘋果面試考題
有100顆編好號碼的燈泡，在第一階段，你將它們全部點亮。第二階段，你每隔一顆燈泡
就熄滅一顆；第三階段，每隔兩顆燈泡就熄滅一顆。在經過100個階段後，還剩幾顆燈泡
亮著？
這好難...可以分享一下你們的答案嗎?
英文版：
You have 100 numbered light bulbs, that are all turned on in the first pass.
Then you switch every other light bulb, then every third light bulb. After
100 passes, how many light bulbs are on?
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→
06/07 16:45, , 1F
06/07 16:45, 1F
推
06/08 07:04, , 2F
06/08 07:04, 2F
→
06/08 13:13, , 3F
06/08 13:13, 3F
→
06/08 14:46, , 4F
06/08 14:46, 4F
推
06/09 01:12, , 5F
06/09 01:12, 5F
推
06/10 01:41, , 6F
06/10 01:41, 6F
→
06/10 06:07, , 7F
06/10 06:07, 7F
→
06/10 10:33, , 8F
06/10 10:33, 8F
推
06/11 11:27, , 9F
06/11 11:27, 9F
→
06/11 11:29, , 10F
06/11 11:29, 10F
→
06/11 11:30, , 11F
06/11 11:30, 11F
→
06/11 11:44, , 12F
06/11 11:44, 12F
推
06/17 23:08, , 13F
06/17 23:08, 13F
推
06/17 23:13, , 14F
06/17 23:13, 14F
推
06/17 23:36, , 15F
06/17 23:36, 15F
→
06/18 22:42, , 16F
06/18 22:42, 16F
→
06/18 22:43, , 17F
06/18 22:43, 17F
推
06/19 22:14, , 18F
06/19 22:14, 18F
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