# Python Math: Print all permutations of a given string

## Python Math: Exercise-16 with Solution

Write a Python program to print all permutations of a given string (including duplicates).

In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting. These differ from combinations, which are selections of some members of a set where order is disregarded.

In the following image each of the six rows is a different permutation of three distinct balls

**Sample Solution**:-

**Python Code:**

```
def permute_string(str):
if len(str) == 0:
return ['']
prev_list = permute_string(str[1:len(str)])
next_list = []
for i in range(0,len(prev_list)):
for j in range(0,len(str)):
new_str = prev_list[i][0:j]+str[0]+prev_list[i][j:len(str)-1]
if new_str not in next_list:
next_list.append(new_str)
return next_list
print(permute_string('ABCD'));
```

Sample Output:

['ABCD', 'BACD', 'BCAD', 'BCDA', 'ACBD', 'CABD', 'CBAD', 'CBDA', 'ACDB', 'CADB', 'CDAB', 'CDBA', 'ABDC', 'BADC ', 'BDAC', 'BDCA', 'ADBC', 'DABC', 'DBAC', 'DBCA', 'ADCB', 'DACB', 'DCAB', 'DCBA']

**Flowchart:**

## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

**Python Code Editor:**

**Have another way to solve this solution? Contribute your code (and comments) through Disqus.**

**Previous:** Write a Python program to returns sum of all divisors of a number.

**Next:** Write a Python program to print the first n Lucky Numbers.

**What is the difficulty level of this exercise?**

Test your Programming skills with w3resource's quiz.

## Python: Tips of the Day

**Print Imported Modules:**

import sys imported_modules = [m.__name__ for m in sys.modules.values() if m]

**Weekly Trends**- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join

We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook