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s中内容怎么反转成的s2,搞不懂

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public class G
{
public static void main(String[] args)
{
String s = "1234567";
String s2 = "";
for(int i=0; i<s.length(); i++)
{
s2 = s.charAt(i) + s2;
}
System.out.println(s2);
}
}


1楼2016-02-23 10:54回复