15 lines
409 B
Ada
15 lines
409 B
Ada
package body Hailstones is
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function Create_Sequence (N : Positive) return Integer_Sequence is
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begin
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if N = 1 then
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-- terminate
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return (1 => N);
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elsif N mod 2 = 0 then
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-- even
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return (1 => N) & Create_Sequence (N / 2);
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else
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-- odd
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return (1 => N) & Create_Sequence (3 * N + 1);
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end if;
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end Create_Sequence;
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end Hailstones;
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