Update personal solution to Day 10 problem in Python (#122)

* Add @aaditkamat as a contributor

* Add Ruby code for Day 1: FizzBuzz problem

* Add Ruby code for Day 2: String reverse problem

* Update README.md for Day 2

* Modify Ruby code and README

* Add condition for nil and wrong type edge cases

* Add a seperate Ruby source code file for palindrome

* Modify code for reverse.rb

* Add seperate palindrome and reverse code sections in README

* Update gitignore

* Refactor palindrome.rb and rename heading in README

* Add solution for Day 3: Hamming Problem

* Add condition for strings of unequal lengths

* Update README

* Change project name and owner in.all-contributorsrc

* Remove merge conflict lines

* Add @shivank86 as a contributor

* Add C++ files for different patterns

* Add author and date comments at the top of C++ files

* Update README.md

* Add solution for Day 6 Problem in Python

* Update README

* Refactor code files

* Modify string representation of output in python files

* Add Ruby solutions for Day 6 problem

* Update README for Ruby code

* Add first version of solutions for Day 7 problem in C++, Java & Ruby

* Modify solutions

* Update Day 7 README

* Remove merge conflicts from CONTRIBUTORS.md

* Add back removed lines in CONTRIBUTORS.md

* Add code sections contributed by @imkaka to day 6 README

* Update README.md

* Add C++ solution

* Add Day 8 solution in C++

* Add Day 8 solution in Java

* Add Day 8 solution in Ruby

* Add Day 8 solution in Python

* Add credits at the top of the code

* Update README

* Update C++ implementation

* Update Python implementation

* Add solution for Day 10: String Permutation Problem in Python

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Update Day 10 README

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Change heading in README and remove empty directory in day 9

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Update README.md

* Update day 10 Python solution

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Add the updated solution to day 10 README

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

Author: Aadit Kamat

day10/Python/permutations.py

@@ -5,25 +5,25 @@
 
 def permutations(string):
     if (len(string) <= 1):
-        return [string]
-    lst = []
+        return {string}
+    permutation_set = set()
     for i in range(len(string)):
         substring = ''
         for j in range(len(string)):
             if j != i:
                 substring += string[j]
-        lst.extend(list(set(map(lambda x: string[i] + x, permutations(substring)))))
-    return lst
+        permutation_set |= set(map(lambda x: string[i] + x, permutations(substring)))
+    return permutation_set
 
 
-def printList(string_list):
-    for string in string_list:
+def printSet(string_set):
+    for string in string_set:
         print(string)
 
 def main():
     print('Enter a string: ')
     string = input()
     print(f'The permutations of {string} are:')
-    printList(permutations(string))
+    printSet(permutations(string))
 
 main()

day10/README.md

@@ -122,34 +122,33 @@ permut('123');
 
 ### [Solution1](./Python/permutations.py)
 ```python
-
 '''
 @author: aaditkamat
 @date: 02/01/2019
 '''
 
 def permutations(string):
     if (len(string) <= 1):
-        return [string]
-    lst = []
+        return {string}
+    permutation_set = set()
     for i in range(len(string)):
         substring = ''
         for j in range(len(string)):
             if j != i:
                 substring += string[j]
-        lst.extend(list(set(map(lambda x: string[i] + x, permutations(substring)))))
-    return lst
+        permutation_set |= set(map(lambda x: string[i] + x, permutations(substring)))
+    return permutation_set
 
 
-def printList(string_list):
-    for string in string_list:
+def printSet(string_set):
+    for string in string_set:
         print(string)
 
 def main():
     print('Enter a string: ')
     string = input()
-    print('The permutations of {string} are:')
-    printList(permutations(string))
+    print(f'The permutations of {string} are:')
+    printSet(permutations(string))
 
 main()
 ```