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<?php var_dump(str_increment('AA')); var_dump(str_increment('AA', 1)); // expected: 'AB' var_dump(str_increment('AA', 3)); // expected: 'AD' var_dump(str_decrement('AA')); var_dump(str_increment('AA', -1)); // expected: 'Z'
preferences:
46 ms | 406 KiB | 5 Q