Bell numbers: Difference between revisions
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A little optimization was added in calculating the factorial of a number by using memoization. |
A little optimization was added in calculating the factorial of a number by using memoization. |
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Also, see this task's ''discussion'' to view how the sizes of Bell numbers increase in relation to its index. |
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<lang rexx>/*REXX program calculates and displays a range of Bell numbers (index starts at zero).*/ |
<lang rexx>/*REXX program calculates and displays a range of Bell numbers (index starts at zero).*/ |
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parse arg LO HI . /*obtain optional arguments from the CL*/ |
parse arg LO HI . /*obtain optional arguments from the CL*/ |
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