Implement a function to find all possible permutations of a given string.

 To find all possible permutations of a given string, we can use the concept of recursion. The idea is to select one character from the string, and then recursively find all the permutations of the remaining characters.

We can repeat this process for each character in the string to generate all possible permutations.

def permutations(string):

    """

    Returns a list of all possible permutations of the given string.

    """

    if len(string) == 1:

        return [string]

    else:

        perms = []

        for i in range(len(string)):

            # Get the current character and the rest of the characters

            char = string[i]

            rest = string[:i] + string[i+1:]

            # Find all permutations of the rest of the characters

            rest_perms = permutations(rest)

            # Add the current character to each of the permutations

            for perm in rest_perms:

                perms.append(char + perm)

        return perms

To use this function, simply call it with a string as an argument:

string = "abc"

perms = permutations(string)

print(perms)

This will output the following list:

['abc', 'acb', 'bac', 'bca', 'cab', 'cba']

This function uses a recursive approach to find all permutations. The base case is when the string has only one character, in which case there is only one permutation (the string itself). For strings with more than one character, the function finds all permutations of the remaining characters and adds the current character to each of those permutations. This process continues recursively until all permutations are found.

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