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。
Advance this pointer-- this finger, to the next element of the list which is 4, make the comparison.
前移这个指示器--也就是这根手指,让它指向列表中的,下一个元素4,再做比较。
I advance this finger to 3.
前移这根手指到。
One, then I advance this finger.
,然后我前移手指。
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