Assuming there is a javascript array1 with 10,000 elements,
what would be the time complexity of:
var array2=new array();
array2.push(array1);
and what about the time complexity of
var object={};
object['array2']=array1;
Are both operations O(n)? Thank you for clarifying.
It is expected that both operations will be amortized O(1).
The outcome may vary depending on the specific JavaScript implementation of the browser, but a reasonable one should utilize an arraylist-like structure for square brackets `[]`, and a hashtable-like structure for curly braces `{}`. Both arraylists and hashtables typically have an amortized O(1) runtime for inserting elements.
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