Python program to remove duplicates from string(order intact)

In this tutorial, we will learn writing the python program to remove the duplicate characters from the string while preserving their order of string characters.

Problem Statement

Take a string from user as an input and check for duplicate characters. If there is any duplicate of characters found, then remove it.

For example:

Case1: If the user inputs the string ‘programmingLanguage’

Then the output should be ‘progaminLue’, where there is no character that is repeating.

Case2: If the user inputs the string ‘LearningIsFun’

Then the output should be ‘LearnigIsFu’, where there is no character that is repeating.

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Our logic to remove duplicates from string

• Firstly, take two strings as inputs from the user.
• then, we make all characters stored in a set, which removes the duplicates.
• then, use string concatenation methods to join the characters in the set together
• And finally, return the concatenated string as an output of our program.

Algorithm to remove duplicates from string

Step1:  Start

Step2:   Take string as input from the user.

Step3: print  “ ”.join(dict.fromkeys(str1))

Step4: Stop

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Python code to remove duplicates from string

Output :

Explanation:

Here, the user gives input as ‘aaabbcccd’, so first, the character of the string gets converted into elements of the dictionary, and the newly created dictionary value will be

‘ { ‘a’: None, ‘b’: None, ‘c’: None, ‘d’: None } ’

After that on join operation, the keys of the dictionary get concatenated in order and return the output as ‘abcd’.