Hi, Having an array of arrays (@AoA), containing an index of elements stored in a second array (@A): 

my @AoA = (
   [ '1', '2', '10' ],
   [ '3', '4', 5'  ],
   [ '6', '8', '11'  ],
   [ '0', '7',  '9'  ],
);

my @A = qw(0 0 0 0 1 2 0 0 1 0 1 0);

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Walking through @AoA, I would like the AoA index $i $j to be reported for the first occurence to in the second array is not zero. 

@AoA[$i][$j] = $index;

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Store $i, $j for the first occurence of 

@A[$index] !=0

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Thanks, best.

In reply to Control loop 2D array by FFRANK

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