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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) {
  11.         long beg = System.nanoTime();
  12.         solve(419, 792);
  13.         System.out.println("Time needed to calculate: "+(System.nanoTime()-beg)/1000000.0 + "ms");
  14.     }
  15.  
  16.     public static void solve(int a, int b) {
  17.         int[] aDigits = new int[3];
  18.         int[] bDigits = new int[3];
  19.         for (int i = 0; i < 3; i++) {
  20.             aDigits[2 - i] = (a / (int) Math.pow(10, i)) % 10;
  21.             bDigits[2 - i] = (b / (int) Math.pow(10, i)) % 10;
  22.         }
  23.         for (int x = 10; x <= 15000; x++) {
  24.             int numBaseX = digitsToBase10(aDigits, x);
  25.             int y = 10;
  26.             while (y <= 15000) {
  27.                 int numBaseY = digitsToBase10(bDigits, y);
  28.                 if (numBaseX == numBaseY) {
  29.                     System.out.println("Base X: " + x + " Base Y: " + y);
  30.                     return;
  31.                 } else if (numBaseY > numBaseX) {
  32.                     break;
  33.                 } else {
  34.                     y++;
  35.                 }
  36.             }
  37.         }
  38.         System.out.println("Nothing found");
  39.     }
  40.  
  41.     public static int digitsToBase10(int[] digits, int b) {
  42.         int res = 0;
  43.         for (int i = 0; i < digits.length; i++) {
  44.             res += digits[i] * (int) Math.pow(b, digits.length - 1 - i);
  45.         }
  46.         return res;
  47.     }
  48. }
Success #stdin #stdout 0.07s 380160KB
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stdin
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Standard input is empty
stdout
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Base X: 47 Base Y: 35
Time needed to calculate: 1.739916ms
https://ideone.com/naMenH
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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