Java-HashMap Archives - Page 9 of 9

Medium

HashMap<K, V> is a part of Java’s collection since Java 1.2. This class is found in java.util package. It provides the basic implementation of the… Read More

Java - util package

Java-Collections

Java-HashMap

Java

IdentityHashMap class in Java

Basic

The IdentityHashMap implements Map interface using Hashtable, using reference-equality in place of object-equality when comparing keys (and values). This class is not a general-purpose Map… Read More

Java-Collections

Java-HashMap

java-IdentityHashMap

Java

HashMap Class Methods in Java with Examples | Set 1 (put(), get(), isEmpty() and size())

Easy

HashMap is a data structure that uses a hash function to map identifying values, known as keys, to their associated values. It contains “key-value” pairs… Read More

Java-Collections

Java-HashMap

Java

HashMap and TreeMap in Java

Easy

HashMap and TreeMap are part of collection framework. HashMap java.util.HashMap class is a Hashing based implementation. In HashMap, we have a key and a value… Read More

Java-Collections

Java-HashMap

Java-Map-Programs

java-TreeMap

Java

Differences between HashMap and HashTable in Java

Easy

HashMap and Hashtable store key/value pairs in a hash table. When using a Hashtable or HashMap, we specify an object that is used as a… Read More

Java-HashMap

Java-HashTable

Java-Map-Programs

Java

Print Postorder traversal from given Inorder and Preorder traversals

Hard

Given Inorder and Preorder traversals of a binary tree, print Postorder traversal. Example: Input: Inorder traversal in[] = {4, 2, 5, 1, 3, 6} Preorder… Read More

Amazon

Java-HashMap

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