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  1. Practice
  2. Algorithms
  3. Warmup
  4. Diagonal Difference
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Diagonal Difference

  • ben_nxumalo + 0 comments
    $first = $second=0;
$j = $n-1;
for($i=0;$i<$n; $i++){
    $first +=$a[$i][$i];
    $second +=$a[$i][$j];
    $j--;
} 


$result=  abs($first-$second);
print abs($result);