You could also use glob: 

my @set = glob "{A,B,C,D}{P,Q,R}{1,2,3,4,5}";

print "@set\n";

[download]

___ 

$ ./700577.pl
AP1 AP2 AP3 AP4 AP5 AQ1 AQ2 AQ3 AQ4 AQ5 AR1 AR2 AR3 AR4 AR5 BP1 BP2 BP
+3
BP4 BP5 BQ1 BQ2 BQ3 BQ4 BQ5 BR1 BR2 BR3 BR4 BR5 CP1 CP2 CP3 CP4 CP5 CQ
+1
CQ2 CQ3 CQ4 CQ5 CR1 CR2 CR3 CR4 CR5 DP1 DP2 DP3 DP4 DP5 DQ1 DQ2 DQ3 DQ
+4
DQ5 DR1 DR2 DR3 DR4 DR5

[download]

In reply to Re: Generate Matrix in perl by almut
in thread Generate Matrix in perl by cs08

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