That is, if you have an array with three elements that are numbered 0, 1, and 2, you can create element 50 without worrying about elements 3 through 49.

 
  • 那就是說(shuō),如果你有一個(gè)包含數字0,1,2這三個(gè)數字的數組,你可以創(chuàng )建一個(gè)50個(gè)元素的數組,不用擔心3到49的元素。
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