Explain the uses of matrix with an example?
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What are skew trees? For a tree with 4 nodes draw all possible binary? Generalize for n nodes how many binary trees can be drawn?
What is difference between hashmap and hashtable?
What is the complexity of arraylist?
Why insertion is faster in linked list?
Which sorting algorithm uses minimum number of swaps?
What is difference between array and arraylist?
Can arraylist hold different types?
What is precision?
Can you tell me the differences between Array and ArrayList?
What is the need of sorting?
Is arraylist synchronized?
A list is ordered from smaller to largest when a sort is called. Which sort would take the longest time to execute?