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# array find all possible dimension

Given array: int[] dimension = { 1, 2, 3 };

That produces the output: 1 2 3 12 13 23 123

I'm new to array...i can't figure out the way on even how to start... any idea?...really appreaciate if someone could help...thanks!

View Answers March 11, 2011 at 3:26 PM

```import java.util.*;

class Example{
static ArrayList list = new ArrayList();
public static void generate(String str){
list.add(str);

if (str.length() == 1){
list.add(str);
return;
}
for (int i = 0; i < str.length(); i++){
generate(str.substring(0,i) + str.substring(i+1));
}
}
public static void main(String args[])
{
int arr[]={1,2,3};
String st ="";
for(int i=0;i<arr.length;i++){
st+=Integer.toString(arr[i]);
}

generate(st);
HashSet set=new HashSet(list);
ArrayList l=new ArrayList(set);
for(int i=l.size()-1;i>=0;i--){
System.out.println(l.get(i));
}
}
}
```

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