[LON-CAPA-users] tables, matching problems

[Gerd Kortemeyer]

Quoting Guy Albertelli II <guy@albertelli.com>:
>  $seed=&random(1,1000000,1);
>  @foils=&random_permutation($seed,@foils);
>  @graph=&random_permutation($seed,@graph);

Using the built-in &random_permutation-function is of course much more elegant
than my pedestrian permutation algorithm:

> for ($i=1;$i<=3;$i++) {
>     $i1=&random(0,3,1);
>     $i2=&random(0,3,1);
>     $f=$files[$i1];
>     $v=$vals[$i1];
>     $files[$i1]=$files[$i2];
>     $vals[$i1]=$vals[$i2];
>     $files[$i2]=$f;
>     $vals[$i2]=$v;
>}

Live and learn ...

- Gerd.

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