新手java中怎么将一个字符数组反序，不要new数组，只能使用一个字符数组，三克油
可以用Collection.reverse(list)呀，先把你的数组放到List里，再Collection.reverse(list)，然后再从list中拿回来，示例代码：
public static void main(String[] args) {
String[] deal = new String[3];
deal[0] = "0";
deal[1] = "1";
deal[2] = "2";
List<String> list = new ArrayList<String>();
for (int i = 0; i < deal.length; i++) {
list.add(i, deal[i]);
}
Collections.reverse(list);
for (int i = 0; i < list.size(); i++) {
deal[i] = list.get(i);
}
for (int i = 0; i < deal.length; i++) {
System.out.println(deal[i]);
}
}
public String[]dealwithstring(String[]deal){
if(deal.length==0)
return null;
if(deal.length%2==0)
{
int l=deal.length;
int c=deal.length/2;
for(int i=0;i<c;i++){
String change=deal[i];
deal[i]=deal[l-1-i];
deal[l-i-1]=change;
}
return deal;
}
if(deal.length%2==1)
{
int l=deal.length;
int c=deal.length/2;
for(int i=0;i<c;i++){
String change=deal[i];
deal[i]=deal[l-1-i];
deal[l-i-1]=change;
}
return deal;
}
return null;
}