You get an array of arrays. If you sort the arrays by their length, you will see, that their length-values are consecutive. But one array is missing! You have to write a method, that return the length ...

In jquery size() and length property are the two features, which have the same property of returning the number of elements in a jquery object which creates a lot of confusion for developers.this blog ...

arr (any): What may or may not be an array lengths (integer or array): One or more integers, each of which represents an acceptable number of items in the array. Optional: Object argument: arrays ...