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  1. /**
  2.  * Created by sumisha on 3/1/2016.
  3.  */
  4. import java.util.ArrayList;
  5. import java.util.Date;
  6. import java.util.List;
  7. import java.util.Random;
  8.  
  9. public class Main {
  10.     static int[] coinSet = {1,5,10,25};
  11.     static List<List<Integer>> possibleWays = new ArrayList<>();
  12.     static List<Integer> currentWay = new ArrayList<>();
  13.     public static void main(String[] args) {
  14.         List<Integer> countOfCoins = new ArrayList<>();
  15.         makeChange(7, 0, countOfCoins);
  16.         //System.out.print(possibleWays);
  17.     }
  18.  
  19.     private static int makeChange(int amount, int startCoinIdx, List<Integer> coinsSoFar) {
  20.         if(startCoinIdx == coinSet.length){
  21.             if(amount == 0){
  22.                 possibleWays.add(coinsSoFar);
  23.                 System.out.println(coinsSoFar);
  24.             }
  25.             //System.out.println(coinsSoFar);
  26.             return 0;
  27.         }
  28.         for(int count = 0;(count*coinSet[startCoinIdx]) <= amount;count++){
  29.             List<Integer> temp = new ArrayList<>();
  30.             for(int i = 0;i < coinsSoFar.size();i++) temp.add(coinsSoFar.get(i));
  31.             for(int i = 0;i < count;i++) temp.add(coinSet[startCoinIdx]);
  32.             makeChange(amount - (count * coinSet[startCoinIdx]),startCoinIdx+1, temp);
  33.             temp.clear();
  34.         }
  35.         return 0;
  36.     }
  37. }
  38.  
Success #stdin #stdout 0.11s 320576KB
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[1, 1, 5]
[1, 1, 1, 1, 1, 1, 1]
https://ideone.com/kIckmG
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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