Then they lined up together, each holding a different number, and shuffled back and forth to order their Numbers from largest to smallest, then smallest to largest.

随后他们站成一排，每人举着一个不同的数字，接着来回移动，以按他们手中数字从大到小排序，再从小到大排序。

youdao

In order to reduce the number of messages sent back and forth, power users may user "command chaining" to send several commands that get called sequentially.

为了减少来回发送的消息数量，功能强大的用户还可以使用“命令链”发送几个按顺序呼叫的命令。

youdao

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。

youdao

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。

哈佛公开课 - 计算机科学课程节选

N But it's definitely not one and in fact it wasn't N in the case of Selection Sort because remember the algorithm we implemented on stage last week had me going back and forth across the stage selecting on iteration, the smallest person I can find, the smallest number and then putting them into place.

但在选择排序中，肯定不会是1，也不是,注意，上周我们在这儿,实现的算法中，反复地,迭代进行选择，选出最小的数,然后将其放在合适的位置。

哈佛公开课 - 计算机科学课程节选

Because I'd missed a number of days traveling back and forth to the West Coast to care for my mother in the months prior to her death, I felt I should return to work as soon as possible.

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