Tag: duplicate
Remove Duplicate Elements from a Sorted Singly Linked List
Lets remove all duplicate elements from a sorted singly linked list. For example, Advertisements Suppose given linked list contains following elements in given order, 1, 2, 3, 4, 4, 5, 6, 7, 7, 7, 7, 9, 89 Frequently Asked: Reverse a Singly Linked List in a Single Iteration Create a Singly Linked List from an …
Remove Duplicate Elements from a Sorted Singly Linked ListRead More
How to Find & Drop duplicate columns in a DataFrame | Python Pandas
In this article we will discuss how to find duplicate columns in a Pandas DataFrame and drop them. In Python’s pandas library there are direct APIs to find out the duplicate rows, but there is no direct API to find the duplicate columns. So, we have to build our API for that. Advertisements First of …
How to Find & Drop duplicate columns in a DataFrame | Python PandasRead More
Pandas : Find duplicate rows based on all or few columns
In this article we will discuss ways to find and select duplicate rows in a Dataframe based on all or given column names only. DataFrame.duplicated() In Python’s Pandas library, Dataframe class provides a member function to find duplicate rows based on all columns or some specific columns i.e. Advertisements DataFrame.duplicated(subset=None, keep=’first’) It returns a Boolean …
Pandas : Find duplicate rows based on all or few columnsRead More
Find frequency of each character in string and their indices | Finding duplicate characters in a string
In this article we will discuss different ways to fetch the frequency or occurrence count of each character in the string and their index positions in the string using collections.Counter() and regex. Get Frequency of each character in string using collections.Counter() collections.counter(iterable-or-mapping) Counter is a dict subclass and collections.Counter() accepts an iterable entity as argument …
Find duplicate rows in MySQL
This article will look into how to find duplicate rows in MySQL based on one column and multiple columns. MySQL find duplicate rows based on one column : Using GROUP BY MySQL find duplicate rows based on one column : Using JOINS Find duplicate rows in MySQL with multiple columns : Using GROUP BY Find …
MySQL Delete Duplicate Rows but keep one
In this article, we will see how to delete duplicate rows from a table and keep only one using various ways, mainly: Delete the duplicate rows but keep latest : using GROUP BY and MAX Delete the duplicate rows but keep latest : using JOINS Delete the duplicate row but keep oldest : using JOINS …
Can a dictionary have duplicate keys in Python?
In this article, we will find out whether a dictionary has duplicate keys or not in Python. The straight answer is NO. You can not have duplicate keys in a dictionary in Python. But we can have a similar effect as keeping duplicate keys in dictionary. We need to understand the reason behind this question …
Drop Duplicate Rows from Pandas Dataframe
In this article, we will discuss different ways to delete duplicate rows in a pandas DataFrame. Table of Contents: Drop duplicate rows from DataFrame using drop_duplicates() Drop Duplicate Rows from Dataframe by one column Drop duplicate rows from dataframe by multiple columns Drop duplicate rows from entire Dataframe Drop duplicate rows from dataframe using groupby() …
Remove Duplicate Characters from String in Python
This article will discuss different ways to remove duplicate characters from a string in Python. Table Of Contents Remove Duplicate Characters from String using set() and sorted() Remove Duplicate Characters from String using OrderedDict Remove Duplicate Characters from String using dict Remove Duplicate Characters from String using set Supose we have a string, Advertisements “Wakanda-Warrior” …
Remove duplicate spaces from string in Python
In this article, we will discuss different ways to delete duplicate spaces from a string in Python. Table Of Contents Remove duplicate spaces from string using split() and join() Remove duplicate spaces from string using Regex Suppose we have a string that contains some duplicate whitespaces, Advertisements “This is a simple string” After removing duplicate …