Category Archives: zz

Python统计DNA序列中长度为n的子序列频率

ms是我师弟的rotation project:
给定一堆DNA序列,即由字符A, C, G, T组成的字符串,统计所有长度为n的子序列出现的频率。
比如 ACGTACGT,子序列长度为2,于是 AC=2, CG=2, GT=2, TA=1,其余长...

你什么动机?(转载)

“生在中国是一种不幸,有太多的事情让人痛苦和难过;生在中国也是一种幸福,每天都可以看到改变,看到新的希望。” 为啥我看到的更多的是前半句,尤其是看过这组照片之后。嗯,我...

An interesting puzzle

via Richard Wiseman's blog
Can you take the clock face below, and cut it into four pieces such that the numerals on each part add up to the same number?

So, for example, this solution would not work because the numbers on the four pieces ...

关于Japanese English的冷笑话

来源在此
Supplies
A foreman was assigned three new workers, two big strong local men, and a little guy from Japan.
Because of their size, the foreman gave the two locals the digging work, and told the Japanese man "You'll be in c...

The Road Not Taken

看了李开复的我的新公司:创新工场一文,发现我也曾经喜欢这首诗:
Robert Frost (1874–1963). Mountain Interval. 1920.
The Road Not Taken
TWO roads diverged in a yellow wood,
And sorry I could not ...