• I think one of the classic ones for strings is called the Rabin-Karp algorithm. And it's simply the same idea that you have a mapping from your import into a set of integers.

    我认为字符串哈希,最经典的是Rabin-Karp算法,它只是简单的相同概念,你有一个映射关系将你的输入映射成一数字

    麻省理工公开课 - 计算机科学及编程导论课程节选

  • So just to show you how big a difference it makes, let's run a couple of numbers.

    让我们试试一数字吧,如果n是1000的话。

    麻省理工公开课 - 计算机科学及编程导论课程节选

  • You can either think of it as an arrow and imagine the arrow, or you can reduce it to a pair of numbers, x and y.

    你既可以用有向线段来表示,也可以用一数字来表示,x 和 y

    耶鲁公开课 - 基础物理课程节选

  • If you give me a pair of numbers, Ax and Ay, that's as good as giving me this arrow, because I can find the length of the arrow by Pythagoras' theorem.

    如果给我一数字,Ax 和 Ay,就相当于给了我这个箭头示意图,因为我可以利用毕达哥拉斯定理定理求出模长

    耶鲁公开课 - 基础物理课程节选

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