// TODO: 3 - Get and print the first (lowest) element using first() // Get and print the last (highest) element using last() // TODO: 4 - Get a subset of elements from 20 (inclusive) to 45 (exclusive) ...
// TODO: 4 - Get and print the first element using getFirst() // Get and print the last element using getLast() // TODO: 5 - Remove the first element using removeFirst() ...
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