⬅ Permutations Of String | Code Tutorial

A no-bs line-by-line code explanation of permutating characters in a string.

result = list()
def generate(string, start, end):
    current = 0 
    if start == end-1:
        if not string in result:
            result.append(string)
    else:
        for current in range (start, end):
            x = list(string)
            temp = x[start]
            x[start] = x[current]
            x[current] = temp
            generate(''.join(x), start+1, end)
            temp = x[start]
            x[start] = x[current]
            x[current] = temp
def main():
    string = "AAB"
    length = len(string)
    generate(string, 0, length)
    print result    
if __name__ == "__main__":
    main()