目录
(2)int indexOf(int ch, int fromIndex):
(4)int indexOf(String str, int fromIndex):
(2)int lastIndexOf(int ch, int fromIndex):
(3)int lastIndexOf(String str):
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目录
(2)int indexOf(int ch, int fromIndex):
(4)int indexOf(String str, int fromIndex):
(2)int lastIndexOf(int ch, int fromIndex):
(3)int lastIndexOf(String str):
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