Change the dir structure slightly

short_phone_interview_problems/combination.py

@@ -1,32 +0,0 @@
-#!/usr/bin/env python
-
-__author__ = "bt3"
-
-def combination(array):
-    if len(array) < 2:
-        return set(array)
-    
-    result = set()
-    for index, item in enumerate(array):
-        new_array = array[:index] + array[index+1:]
-        result.add(item)
-        for perm in combination(new_array):
-            new_item = ''.join(sorted(item + perm))
-            result.add(new_item)
-    
-    return result
-    
-    
-    
-if __name__ == '__main__':
-    array = ['a', 'b', 'c']
-    result = set(['a', 'ac', 'ab', 'abc', 'bc', 'c', 'b']) 
-    assert(combination(array) == result)
-    
-    array = ['']
-    result = set([''])
-    assert(combination(array) == result)
-    
-    array = ['a']
-    result = set(['a'])
-    assert(combination(array) == result)