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Tag Archives: java-TreeMap

Given an element N and a TreeMap, the task is to find the position of this element in the given TreeMap in Java. Examples: Input:… Read More
Given an array of integers, find the closest element for every element.  Examples: Input : arr[] = {10, 5, 11, 6, 20, 12} Output : 6,… Read More
By default TreeMap elements in Java are sorted in ascending order of keys. However, we can create the TreeMap in reverse order using Collections.reverseOrder() method… Read More
The navigableKeySet() method of java.util.TreeMap class is used to return a NavigableSet view of the keys contained in this map.The set’s iterator returns the keys… Read More
The comparator() method of java.util.TreeMap class is used to return the comparator used to order the keys in this map, or null if this map… Read More
Given example shows how to sort user defined objects TreeMap, you can sort the keys based on the logic provided inside the method. Given a… Read More
HashMap is a part of Java’s collection since Java 1.2. It provides the basic implementation of Map interface of Java which stores the data in… Read More
Pre-requisite: TreeMap in Java The floorKey() method is used to return the greatest key less than or equal to given key from the parameter. Syntax:… Read More
Pre-requisite: TreeMap in Java The lowerKey() method is used to return the greatest key strictly less than to given key, passed as the parameter. In… Read More
In this article, Lambda Expression with Collections is discussed with examples of sorting different collections like ArrayList, TreeSet, TreeMap, etc. Sorting Collections with Comparator (or… Read More
In Java, the values() method of the TreeMap class is present inside java.util package which is used to create a collection out of the values… Read More
The java.util.TreeMap.putAll() is an inbuilt method of TreeMap class that is used for the copy operation. The method copies all of the elements i.e., the… Read More
The java.util.TreeMap.put() method of TreeMap is used to insert a mapping into a map. This means we can insert a specific key and the value… Read More
The java.util.TreeMap.remove() is an inbuilt method of TreeMap class and is used to remove the mapping of any particular key from the map. It basically… Read More
In Java, subMap() method of TreeMap class is used to return the part or portion of the map defined by the specified range of keys… Read More

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