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D.2.5.6 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 |