单选题现有: import java.util.*; class AddStuff2 { public static void main(String [] args) { TreeSett=new TreeSet(); if (t.add("one")) if (t.add("two")) if (t.add ("three")) add("four"); for (String s : t) System.out.print (s); } } 结果为:()A oneB one three twoC one two threeD one two three fourE four one three twoF编译失败
单选题
现有: import java.util.*; class AddStuff2 { public static void main(String [] args) { TreeSett=new TreeSet(); if (t.add("one")) if (t.add("two")) if (t.add ("three")) add("four"); for (String s : t) System.out.print (s); } } 结果为:()
A
one
B
one three two
C
one two three
D
one two three four
E
four one three two
F
编译失败
参考解析
解析:
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