Regular Expression Syntax

Regular Expression

- "Chapter*+?"

- a*b

- [xyz]b

- a?b

- a+b

- [a-c]x

- [a-c]x

- [-ac]x

- [ac-]x

- [^0-9]x

- (ho){2} there

- .abc

- (a|b)+x

Example input that matches

- Chapter*+?

- b, ab, aab, aaab, …

- xb, yb, zb

- b, ab

- ab, aab, aaab, …

- ax, bx, cx

- ax, bx, cx

- -x, ax, cx

- ax, cx, -x

- any non-digit char followed by x

- hoho there

- any (one) char followed by abc

- ax, bx, aax, bbx, abx, bax,...

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