I want to put State objects (which are HashMaps with Character as key and State as Value into an ArrayList named allStates. Should I override the equals and hashCode methods here? Why? How?
I am trying to implement a plane sweep algorithm and for this I need to know the time complexity of java.util.HashMap class\' keySet() method. 开发者_如何学GoI suspect that it is O(n log n). Am I corr
I\'m writing a Java program that parses all the words from a text file and then adds them to a HashMap. I need to count how many dis开发者_StackOverflowtinct words are contained in the file. I also ne
The hash structures I am aware of - HashTable, HashSet & HashMap. Do they all use the bucket structure - ie when two hashcodes are similar exactly the s开发者_C百科ame one element does not overwr
I have been trying to understand the internal implementation of java.util.HashMap and java.util.HashSet.
What is the most efficient way to count all the different keys in a hash_multimap? E.g. if I have a al开发者_开发技巧ready filled hash_multimap, (e.g. a container where you can store multiple entitie
after some years in Java and C# now I\'m back to C++. Of course my programming style is influenced by those languages and I tend to feel the need of a special component that I used massively: the HASH
public interface InnerMap<V> extends Map<String, V> { Map<String, V> getInnerMap(String prefix);
I am developing a parser that needs to put key value pairs in hashmap. A key can have multiple values which I can do in this way HashMap<String,ArrayList<String>> .
Hi Have a List of array, like [[{x509Cert=x509cert.pem, accountNumber=652827, serviceProviderName=Sun, privateKey=pk, userName=0BS0Y72NBN, passWord=VuXYG4hZPS}], [{x509Cert=x509cert.pem, accountNumbe
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