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<?php function checkAisle($term) { if (!ctype_alpha($term[0])) { return "First character out of bounds"; } $locations = array_fill_keys(range('A','L'),1)+array_fill_keys(range('M','Z'),2); $letter = strtoupper($term[0]); return "$letter is located on Aisle {$locations[$letter]}."; } echo checkAisle("Trump") , "\n"; echo checkAisle("banana") , "\n"; echo checkAisle("melon") , "\n"; echo checkAisle("guava") , "\n"; echo checkAisle("nectarine") , "\n"; echo checkAisle("lemon") , "\n";
Output for git.master, git.master_jit, rfc.property-hooks
T is located on Aisle 2. B is located on Aisle 1. M is located on Aisle 2. G is located on Aisle 1. N is located on Aisle 2. L is located on Aisle 1.

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