Week 14. Regular Expressions (RegEx)
# Notes # Regex Java Subexpression Matches ^ Matches beginning of line. 匹配行首。 $ Matches end of line. 匹配行尾。 . Matches any single character except newline. Using m option allows it to match newline as well. 匹配除换行符以外的任何单个字符。使用 m 选项还可以使其与换行符匹配。 [...] Matches any single character in...
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