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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Main
  5. {
  6.     public static void main(String[] args){
  7.         int numberOfBits = 2;
  8.         LinkedList<int []> results = printBin(new int[numberOfBits], 0, numberOfBits);
  9.         Iterator<int[]> i = results.iterator();
  10.         while(i.hasNext()){
  11.             int[] temp = i.next();
  12.             for(int j = 0; j < temp.length; j++){
  13.                 System.out.print(temp[j]);
  14.             }
  15.             System.out.println("");
  16.         }
  17.     }
  18.  
  19.  
  20.     public static LinkedList<int[]> printBin(int[] soFar, int counter, int iterations) {
  21.         if(iterations == 0) {
  22.             LinkedList<int[]> ret = new LinkedList<int[]>();
  23.             ret.add(soFar);
  24.             return ret;
  25.         }else {
  26.             LinkedList<int[]> ret = new LinkedList<int[]>();
  27.             int[] soFar1 = (int[])soFar.clone(); soFar1[counter] = 0;
  28.             int[] soFar2 = (int[])soFar.clone(); soFar2[counter] = 1;
  29.             ret.addAll(printBin(soFar1, counter + 1, iterations - 1));
  30.             ret.addAll(printBin(soFar2, counter + 1, iterations - 1));
  31.             return ret;
  32.         }
  33.     }
  34. }
Success #stdin #stdout 0.07s 380224KB
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https://ideone.com/MbhoeI
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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