ERROR: This method must return a result of type int

Question

Code:

import java.util.*;

public class shuffleDeck
{ 
    public static int shuffleDeck (int[] deck, int theNumber)
    {
        int [] array1         


        

Answer 1

Its because you have declared return type as int and you have given return statment inside for loop now think what will happen if your code dont go in for loop than there will be no return statement so,

so make your code like

public static int shuffleDeck (int[] deck, int theNumber)
  {
 int [] array1 = new int [52];    
    Random random = new Random();
    for (int i = deck.length, j, tmp; i > 1; i--) {
        j = random.nextInt(i);    
        tmp = deck[i - 1];
        deck[i - 1] = deck[j];
        deck[j] = tmp;
        return theNumber;
    }
   return 0;
}