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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. import java.util.concurrent.ThreadLocalRandom;
  7.  
  8. class Ideone {
  9.     public static void main(String[] args) {
  10.         int ok = 0;
  11.         int target = 1100; //цель
  12.  
  13.         for(int k = 0; k < 100; k++) {
  14.             int balance = 1000; //текущий баланс
  15.             int i = 0;
  16.             int reward = 1; // начальная ставка
  17.             while (balance > 0 && balance <= target && reward <= balance) {
  18.                 i++;
  19.                 int rnd = randomRange(1, 99);
  20.                 if (rnd >= 51) {
  21.                     balance -= reward;
  22.                     reward *= 2;
  23.                 } else if (rnd <= 49) {
  24.                     balance += reward;
  25.                     reward = 1;
  26.                 }
  27.  
  28.             }
  29.             if(balance >= target) {
  30.                 ok++;
  31.             }
  32.         }
  33.         System.out.print("chance: " + ok);
  34.     }
  35.  
  36.     public static int randomRange(int min, int max) {
  37.         return ThreadLocalRandom.current().nextInt(min, max + 1);
  38.     }
  39. }
Success #stdin #stdout 0.11s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
chance: 91
https://ideone.com/KVf6qC
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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