Use a Temporary Array to Remove Duplicates From an Array in Java In this method, the main point is to traverse the input array and then copy the unique elements from the original array to a temporary array. To achieve this, we will use theforloop and theifstatement. Finally, the elements...
But sometime in an interview question, folks sometimes get very confused about the method they have to use. In this tutorial we will go over steps on how to remove duplicates from a CSV file and any other file. Let’s get started: Step-1. Create file CrunchifyFindDuplicateCSV.java Step...
In the following example, we are using the distinct() method ofStream API. This method removes the duplicates from the input stream and returns a new stream after removing duplicate elements. importjava.util.ArrayList;importjava.util.Arrays;importjava.util.List;importjava.util.stream.Collectors;publ...
Using Stream to Remove Duplicates in a List Java Stream interface provides many usefulIntermediate Operationsthat we can use to process, filter, or manipulate Stream elements. The ‘distinct()‘ method of the Stream returns a new Stream of unique elements. Thus, we can use it to remove duplic...
// Efficient Java program to remove // duplicates from input.txt and // save output to output.txt importjava.io.*; importjava.util.HashSet; publicclassFileOperation { publicstaticvoidmain(String[] args)throwsIOException { // PrintWriter object for output.txt ...
java.util.ConcurrentModificationException how to remove duplicate values ? import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; import java.util.Set; public class Map_iterator { public static void main(St...
Method 2: Using ‘Data Tab Option’ for Removing the Duplicates from Excel Step 1:In this method, we can see two respective columns, i.e. First Name and Last Name, where we have to remove redundancy. Navigate to the data tab option present in the toolbar. ...
Learn how to remove duplicates from a List in Python. ExampleGet your own Python Server Remove any duplicates from a List: mylist = ["a","b","a","c","c"] mylist = list(dict.fromkeys(mylist)) print(mylist) Try it Yourself » ...
For this purpose, we are going to usepandas.DataFrame.drop_duplicates()method. This method is useful when there are more than 1 occurrence of a single element in a column. It will remove all the occurrences of that element except one. ...
This tutorial will introduce the methods to remove duplicate elements from a list in C#. ADVERTISEMENT TheHashSetclassis used to create a set in C#. A set is a well-known, unordered collection of distinct objects, which means that a set’s elements are unordered and do not repeat themselves...