Java: equals and hashCode in Collections
Why do `HashSet` and `HashMap` care about `equals` and `hashCode`?
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How does the choice of collection affect iteration performance?
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When do you need an `Iterator` instead of only an enhanced for-loop?
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Why is it important to understand the contract of the Iterator interface?
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How would you explain an enhanced for loop in a Java interview?
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What are the trade-offs between using `ListIterator` and `Iterator`?
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Why might an Iterator be preferred for safe removal during iteration?
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What are the tradeoffs between using an enhanced for loop and an Iterator?
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