Explain the practical trade-off between array indexing and linked-list updates.
The move: match the structure to the operation pattern, not to a slogan. Arrays and linked lists are both sequential structures, but they pay for different strengths. Arrays are compact and indexable. Linked lists are pointer chains. That one design difference drives most of the trade-off. Arrays Use arrays when you need direct access by numeric index, tight iteration, or compact storage. The cost appears when you insert or remove in the middle and many items must shift. Linked lists Use linked lists when you already have the node or cursor where a change should happen and want to rewire…
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