Note: The parameters passed in this method must be positive integers. Now notice that I needed to add a pop to the variable since now it keeps the elements after the call to the function.Īlso I needed to use the nonlocal term so the function will know the cur variable. The b () method returns the number of ways picking k unordered outcomes from n possibilities, without repetition, also known as combinations. It is the rearrangement of items in different ways. The elements might be of a string, or a list, or any other data type. Yield from permutations_with_replacement_rec(n, m) Permutations means different orders by which elements can be arranged. Yield from permutations_with_replacement_rec(n_rec - 1, m_rec) This is how it turned out: def permutations_with_replacement(n: int, m: int) -> Iterator]:ĭef permutations_with_replacement_rec(n_rec: int, m_rec: int) -> Iterator]: I created a sub function that is recursive taken out the cur variable. Python Program to Print All Permutations of a String in Lexicographic Order using Recursion. So you said you do not like the way cur is implemented in your code, I thought of a way to take it out of the function declaration. Best Python programming examples for beginners and experts. Since it's a generator it should be: Iterator].
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