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Tag Archives: java-TreeMap

The java.util.TreeMap.entrySet() method in Java is used to create a set out of the same elements contained in the treemap. It basically returns a set… Read More
The java.util.TreeMap.lastKey() is used to retrieve the last or the highest key present in the map. Syntax: tree_map.lastKey() Parameters: The method does not take any… Read More
The java.util.TreeMap.headMap(key_point) method of TreeMap class is used to get all the pairs or portion of the map strictly less than the parameter key_value. The… Read More
In Java, keySet() method of TreeMap class is present inside java.util package in Java is used to create a set out of the key elements… Read More
In Java, containsValue() method of the TreeMap class is used to check whether a particular value is being mapped by any key in the TreeMap.… Read More
The java.util.TreeMap.get() method of TreeMap class is used to retrieve or fetch the value mapped by a particular key mentioned in the parameter. It returns… Read More
size() method of TreeMap class is used to get the size of the map which refers to the number of the key-value pair or mappings… Read More
In Java, clone() method of the TreeMap class is used to return a shallow copy of the mentioned treemap. It just creates a copy of… Read More
The java.util.TreeMap.containsKey() method is used to check whether a particular key is being mapped in the TreeMap or not. It takes the key element as… Read More
The java.util.TreeMap.clear() method in Java is used to clear and remove all of the elements or mappings from a specified TreeMap. Syntax: Tree_Map.clear() Parameters: The… Read More
Suppose we have an elements in ArrayList, we can count the occurrences of elements present in a number of ways. HashMap This data structure uses… Read More
Given a string str with uppercase, lowercase and special characters. The input string is to end with either a space or a dot. The problem… Read More
Prerequisite : HashMap and TreeMap in Java  TreeMap, HashMap and LinkedHashMap: What’s Similar?  All offer a key->value map and a way to iterate through the… Read More
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

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