data-structures Archives - Page 6 of 6

Java

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Search for words with telephone numbers from 2-3-4 tree

The key here would be to acquire all the different character combinations that can derive from the characters related to the supplied number ...

April 8, 2022
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How to implement a tree data-structure in Java?

Is there any standard Java library class to represent a tree in Java? Specifically I need to represent the following: The sub-tree at ...

April 8, 2022
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Java implementation for Min-Max Heap?

April 8, 2022
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How do I sort a list of dictionaries by a value of the dictionary?

I have a list of dictionaries and want each item to be sorted by a specific value. Take into consideration the list:...

April 7, 2022
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HashMap get/put complexity

It depends on many things. It’s usually O(1), with a decent hash which itself is constant time… but you could have a hash which takes ...

April 7, 2022
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Difference between a HashMap and a dictionary ADT

In terms of Java, both the class HashMap and the class Dictionary are implementations of the “Map” abstract data type. Abstract data types are not specific to any one ...

April 5, 2022
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What is the difference between an Abstract Data Type(ADT) and a Data Structure?

This may help: To put it simple, ADT is a logical description and data structure is concrete. ADT is the logical picture of ...

April 4, 2022
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Get keys from HashMap in Java

A HashMap contains more than one key. You can use keySet() to get the set of all keys. team1.put("foo", 1); team1.put("bar", 2); will ...

April 4, 2022
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