Java中compareTo用法

java中的compareto方法，返回参与比较的先后两个字符串的asc码的差值java String a = "a"; String b = "b"; System.out.println(a.compareTo(b)); 输出值-1 String a = "b"; String b = "a"; System.out.println(a.compareTo(b)); 输出值1 String

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