正解1:
int i=10;
int j=8;
int temp;
temp = i;
i = j;
j = temp;
正解2:
int a =8;
int b = 10;
swap(a,b);
public void swap(int x,int y){
int temp;
temp = x;
x = y;
y = temp;
}
正解三:(鑒於其中有A,J,Q,K)
String i=10;
String j=8;
String temp;
temp = i;
i = j;
j = temp;
下面這種情況錯誤!!(不能實現交換)
String a =8;
String b = 10;
swap(a,b);
public void swap(String x,String y){
String temp;
temp = x;
x = y;
y = temp;
}