Problem Set 5: A - Patterns

  1. ^[askdj]+$
  2. ^[A-Za-z]+[A-Za-z0-9]*
  3. ^[A-Za-z]+[A-Za-z0-9_]*
  4. ^[-A-Za-z0-9 ']+$
  5. ^(0|([1-9]+[0-9]*))$
  6. ^[^ @]+@[^ @]+\.[^ @]+$

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