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  1. import java.util.ArrayDeque;
  2. import java.util.Arrays;
  3. import java.util.Deque;
  4. import java.util.ListIterator;
  5. import java.util.StringJoiner;
  6.  
  7. class Test {
  8.   public static void main(String[] args) {
  9.     Object[] o = new Object[] {1, 2, 3, new Object[] {4, new Object[] {5, 6}, 7}, 8};
  10.     blah(o);
  11.   }
  12.  
  13.   static void blah(Object[] ar) {
  14.     Deque<Object> stack = new ArrayDeque<>();
  15.     stack.addAll(Arrays.asList(ar));
  16.  
  17.     StringJoiner joiner = new StringJoiner(",");
  18.  
  19.     while (!stack.isEmpty()) {
  20.       Object val = stack.pop();
  21.       if (val instanceof Object[]) {
  22.         Object[] array = (Object[]) val;
  23.         for (ListIterator<Object> it = Arrays.asList(array).listIterator(array.length); it.hasPrevious(); ) {
  24.           stack.push(it.previous());
  25.         }
  26.       }
  27.       else {
  28.         joiner.add(val.toString());
  29.       }
  30.     }
  31.  
  32.     System.out.println(joiner);
  33.   }
  34. }
Success #stdin #stdout 0.04s 320576KB
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Standard input is empty
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1,2,3,4,5,6,7,8
https://ideone.com/DoMkkJ
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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