I do not have a firm understanding of this in Perl. Basically, I am comparing each character across a number of same-length strings. However, the code needs to be adaptable so that I do not want to "hard code" the number of characters per string or the number of strings. For instance, when I hard code a situation where there are only four strings, I have this: 
        for my $i ( 0 .. $lengthString - 1 ) {
            my $char0 = substr( $string0, $i, 1 );
            my $char1 = substr( $string1, $i, 1 );
            my $char2 = substr( $string2, $i, 1 );
            my $char3 = substr( $string3, $i, 1 );
            }
                }

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But, can I update this code so that there is a second loop for each $char and $string between incrementation of an integer variable, say j? For instance: 
        for my $i ( 0 .. $lengthString - 1 ) {
                     for my $j (0 .. $numChars - 1){
                           // The following line does not work
                my $char$j = substr( $string$j, $i, 1 );
                  }
                }

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In reply to Interpolate variable name in Perl? by SuzuBell

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