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Software Engineer

Explain the time complexity differences between ArrayList and LinkedList.
Software Engineer
Data Structures & Algorithms
+1 more
1 answer I was asked this
"ArrayList allows constant time access (O(1)) to elements using their index because it uses a dynamic array internally, whereas LinkedList requires traversal from the head node, resulting in linear time complexity (O(n))."
Aziz V. - "ArrayList allows constant time access (O(1)) to elements using their index because it uses a dynamic array internally, whereas LinkedList requires traversal from the head node, resulting in linear time complexity (O(n))."See full answer
Software Engineer
Data Structures & Algorithms
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How would you efficiently sum up a massive number of integers?
Software Engineer
Coding
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1 answer I was asked this
Software Engineer
Coding
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Explain the memory changes that occur when executing: Object o = new Object().
Software Engineer
Concept
1 answer I was asked this
"Memory allocation happens for storing a reference pointer as well as the default size of the generic object class depending on the language this is called in. Assuming this is in a JVM, this data is stored in metaspace, and memory allocation happens in heap."
Alex W. - "Memory allocation happens for storing a reference pointer as well as the default size of the generic object class depending on the language this is called in. Assuming this is in a JVM, this data is stored in metaspace, and memory allocation happens in heap."See full answer
Software Engineer
Concept
Explain how hash maps work.
Software Engineer
Data Structures & Algorithms
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Software Engineer
Data Structures & Algorithms
+1 more