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Catalan numbers: Difference between revisions
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→version 1: mention the number of methods shown in the task's preamble.
(→version 1: added/changed comments, indentations, and whitespace, simplified some subroutines and functions.) |
m (→version 1: mention the number of methods shown in the task's preamble.) |
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=={{header|REXX}}==
===version 1===
All four methods use independent memoization for the computation of factorials.
<lang rexx>/*REXX program calculates and displays Catalan numbers using four different methods. */
parse arg LO HI . /*obtain optional arguments from the CL*/
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