Re^2: Nested foreach loops

Fix these warnings:

Scalar value @cards[$i] better written as $cards[$i] at
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Add use strict; then declare all variables with my. See use strict and warnings.
Perl has a convenient quoting operator which is handy for constructing lists: qw. It saves you from excessive quotes and commas. Range Operators are nice too:
```
    foreach $types ( qw(ace jack queen king), (2 .. 10) ) {
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```
perltidy is useful for indenting code.

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