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D.2.9.6 sparsemat
Procedure from library random.lib (see random_lib).
- Usage:
- sparsemat(n,m[,p,b]); n,m,p,b integers
- Return:
- nxm integer matrix, p percent of the entries are 0, the remaining
are random coefficients >=1 and <= b; [defaults: (p,b) = (75,1)]
Example:
| | LIB "random.lib";
sparsemat(5,5);"";
==> 0,0,0,0,0,
==> 0,1,0,0,1,
==> 0,0,0,1,0,
==> 0,1,0,0,0,
==> 0,1,0,1,1
==>
sparsemat(5,5,95);"";
==> 1,0,0,0,0,
==> 0,0,0,0,0,
==> 0,0,0,0,0,
==> 0,0,0,0,0,
==> 0,0,0,1,0
==>
sparsemat(5,5,5);"";
==> 1,1,1,1,1,
==> 1,1,1,1,1,
==> 1,1,1,1,1,
==> 1,0,1,1,1,
==> 1,1,1,1,0
==>
sparsemat(5,5,50,100);
==> 0,17,24,80,0,
==> 0,13,30,45,0,
==> 19,0,0,0,0,
==> 93,0,23,0,69,
==> 0,88,44,31,0
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