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Carandraug (talk | contribs) (→Find if a package is installed: use pkg list instead of pkg describe, because describe has an odd behaviour) |
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You have a number, or an array or matrix of them, and want to know if any of them is an odd or even number, i.e., their parity. | You have a number, or an array or matrix of them, and want to know if any of them is an odd or even number, i.e., their parity. | ||
==== Solution ==== | ==== Solution ==== | ||
Check the remainder of a division by two. If the remainder is zero, the number is | Check the remainder of a division by two. If the remainder is zero, the number is even. | ||
mod (value, 2) ## 1 if odd, zero if even | mod (value, 2) ## 1 if odd, zero if even | ||