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generate all possible combinations of numbers

Emanuele Ungaro answered on June 24, 2022 Popularity 10/10 Helpfulness 2/10

answer generate all possible combinations of numbers

generate all possible combinations of numbers

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procedure generate(k : integer, A : array of any):
    if k = 1 then
        output(A)
    else
        // Generate permutations with k-th unaltered
        // Initially k = length(A)
        generate(k - 1, A)

        // Generate permutations for k-th swapped with each k-1 initial
        for i := 0; i < k-1; i += 1 do
            // Swap choice dependent on parity of k (even or odd)
            if k is even then
                swap(A[i], A[k-1]) // zero-indexed, the k-th is at k-1
            else
                swap(A[0], A[k-1])
            end if
            generate(k - 1, A)
        end for
    end if

Popularity 10/10 Helpfulness 2/10 Language whatever

Source: en.wikipedia.org

Tags: combinations generate numbers whatever

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Contributed on Jun 24 2022

Emanuele Ungaro

0 Answers Avg Quality 2/10

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generate all possible combinations of numbers

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