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.
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+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'));
['ABCD', 'BACD', 'BCAD', 'BCDA', 'ACBD', 'CABD', 'CBAD', 'CBDA', 'ACDB', 'CADB', 'CDAB', 'CDBA', 'ABDC', 'BADC ', 'BDAC', 'BDCA', 'ADBC', 'DABC', 'DBAC', 'DBCA', 'ADCB', 'DACB', 'DCAB', 'DCBA']
Write a Python program to print all permutations of a given string
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