When I started merging, I did merging three times across this whole board, this level, this level, and this level, and each time because of the way I was advancing my fingers I touched each number just once.
在整个过程中,我一共做了,三次合并,这一层,这一层,和这一层,而且每次,由于要前移手指,因此对每个数字,仅仅移动了一次。
That's the finger thing from left finger to right finger going back and forth across the board, never touching a number more than once.
在合并时,我的左手手指,和右手手指来回地在黑板上移动,但对每个数字只会碰到一次。
They want to merge the Securities and Exchange Commission and the Commodity Futures Trading Commission.
他们还想要合并证券交易委员会,和期货商品交易委员会。
Some years ago, when I was a graduate student, I was at Oxford in England and they had men's and women's colleges. They weren't yet mixed and the women's colleges had rules against overnight male guests.
很多年前,我在英国牛津读研究生时,他们有男校和女校,当时还没有合并,而女校有禁止男客过夜的规定。
So it's along the bond axis and it's between a carbon s p 2 hybrid, and then the hydrogen is just a 1 s orbital that we're combining here.
所以它是沿着键轴方向的,而且这里是一个碳sp2杂化轨道,和一个氢的1s轨道的结合,在这里我们可以合并他们。
I'm just saying, "Take this and put it there and combine i and j."
我只会说,"把这个代入那里,合并 i 和 j"
So supposed that I give you 16 elements to sort, well, following the logic before, the running time involved in sorting 16 elements is gonna be twice the running time 16 of sorting 8 elements, left half and right half plus 16 - and again, a little sanity check, 16 means-- just the merge steps, right?
现在要对16个元素进行排序,根据之前的逻辑,对16个元素排序,要花的时间是对8个元素排序所花时间的,2倍,分别用于左半部分和右半部分,再加上6,这里16是-,做合并的步数,对吗?
So, for example, 1s1 again we see hydrogen is 1 s 1, helium we say is 1 s 2, or 1 s squared, 1s2 so instead of writing out the 1 s 1 and the 1 s 2, we just combine it 1s22s1 as 1 s squared, lithium is 1 s 2, 2 s 1.
简化符号所以举例来说,我们又看到氢是,氦是1s2或者1s的平方,所以不是将它写为1s1和1,而是我们将它合并为1s的平方,锂是。
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