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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		final int numberOfAttempts = 1000000;
  13.         int numberOfOccurences = 0;
  14.         for (int i=0;i<numberOfAttempts;i++) {
  15.             //initialize voters
  16.             List<Boolean> voters = new ArrayList<>();
  17.             for (int j = 0; j < 7; j++) {
  18.                 voters.add(true);
  19.             }
  20.             for (int j = 0; j < 11; j++) {
  21.                 voters.add(false);
  22.             }
  23.             Collections.shuffle(voters);
  24.             //There shouldn't be any minus after first five votes
  25.             boolean minusVote = false;
  26.             for (int k = 0; k<5;k++){
  27.                 if (!voters.get(k)){
  28.                     minusVote=true;
  29.                     break;
  30.                 }
  31.             }
  32.             if (!minusVote){
  33.                 numberOfOccurences++;
  34.             }
  35.         }
  36.         System.out.println("Probability: "+100*(double)numberOfOccurences/numberOfAttempts +"%");
  37. 	}
  38. }
Success #stdin #stdout 1.94s 380160KB
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Standard input is empty
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Probability: 0.2439%
https://ideone.com/5Vc0iY
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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