Pythagorean quadruples: Difference between revisions
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=={{header|R}}== |
=={{header|R}}== |
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The best solution to this problem - using lots of for loops - is practically language agnostic. The R way of doing this is far less efficient, taking about 10 minutes on my machine, but it's the obvious way to do this in R. |
The best solution to this problem - using lots of for loops - is practically language agnostic. The R way of doing this is far less efficient, taking about 10 minutes on my machine, but it's the obvious way to do this in R. |
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<lang |
<lang rsplus>squares <- d <- seq_len(2200)^2 |
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aAndb <- outer(squares, squares, '+') |
aAndb <- outer(squares, squares, '+') |
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aAndb <- aAndb[upper.tri(aAndb, diag = TRUE)] |
aAndb <- aAndb[upper.tri(aAndb, diag = TRUE)] |
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