java中的compareTo()方法

java中的compareto方法，返回參與比較的先後兩個字符串的asc碼的差值java String a = "a"; String b = "b"; System.out.println(a.compareTo(b));.net 輸出值-1 1 2 3 4 5 String a = "b"; String b = "a"; System.out.println(a.compareTo(b));

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