What is difference between arraylist and linkedlist?


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Describe linear probing with an example.

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Is quicksort recursive?

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If we add enum constants to a sorted collection ( treemap , treeset ), what will be the order in which they will be maintained?

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Why do we use hashmap?

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If you do not initialize an array what will happen?

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What is the use of isEmpty() member methods?

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Stack can be described as a pointer. Explain.

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Is there any difference between int[] a and int a[]?

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