How to Find all Duplicate Characters in String using Python
In this tutorial, we will program 'How to Find All Duplicate Characters in a String Using Python'. We will learn how to detect duplicate characters in a string. The objective is to enable you to track all duplicates within a string. I will provide a sample program to demonstrate the actual coding of this tutorial.
This topic is very easy to understand; just follow the instructions I provide, and you can also do it yourself with ease. The program I will show you covers the basics of programming for finding duplicate character in a string. I will do my best to provide you with the easiest way for getting all the duplicates from string. So, let's start with the coding.
Getting Started:
First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.
Creating Main Function
This is the main function of the application. The following code will display a simple GUI in terminal console that will display program. To do this, simply copy and paste these blocks of code into the IDLE text editor.- def findDupe(string):
- chars = {}
- for char in string:
- if char not in chars:
- chars[char] = 1
- else:
- chars[char] += 1
- duplicates = []
- for char, count in chars.items():
- if count > 1:
- duplicates.append(char)
- return duplicates
- ret = False
- while True:
- print("\n================== Find all Duplicate Characters in String ==================\n\n")
- mystr=input("Enter a string: ")
- print(findDupe(mystr))
- opt = input("\nDo you want to try again?(yes/no): ")
- if opt.lower() == 'yes':
- ret=False
- elif opt.lower() == 'no':
- ret=True
- print("Exiting program....")
- else:
- print("Please enter yes/no:")
- break
- if ret == False:
- continue
This Python script identifies and returns all duplicate characters in a given string. The script uses a dictionary to count the occurrences of each character, then constructs a list of characters that appear more than once. The user is prompted to enter a string, and the script prints the duplicate characters found in that string. The user can choose to try again or exit the program.
Output:
The How to Find all Duplicate Characters in String using Python source code that I provide can be download below. Please kindly click the download button.
There you have it we successfully created How to Find all Duplicate Characters in String using Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!
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