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Èç¹ûÊÇ-123 Êä³öµÄÊÇ-321Âð?

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step1:toString();
step2:ÓÃÊý×é´æ×Ö·û´®£»
step3:·´ÏòÊä³ö

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¶¥Ò»ÏÂ

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·Ö¶à¸øµã, лл
Java code:


public class Test
{
public static void main(String[] args) throws Exception
{
String resStr = Test.reverse(-123);
System.out.println(Integer.parseInt(resStr));
}


public static String reverse(Integer value) throws Exception
{
String str = value.toString();
if (value >= 0)
{
StringBuffer sb = new StringBuffer();
sb.append(str);
return sb.reverse().toString();
}
else
{
StringBuffer sb = new StringBuffer();
sb.append(str.substring(1));

return "-" + sb.reverse().toString();

}
}
}

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дµÄºÜºÃ

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·Ö¶à¸øµã, лл
Java code


public class Test
{
public static void main(String[] args) throws Exception
{
String resStr = Test.reverse(-123);
System.out.println(Integer.parseInt(re¡­¡­

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