Question

Trying to figure out these methods for comp sci class and I really don't understand. Any help would be really appreciated.

  
   /**
   *
   */
   public static int [] setNums(String vals)
   {
   //this is a helper method to convert a string to an array for searching purposes
       //declare and instantiate an array with length as the number of chars in vals
      
       //lopp through each char in vals
       //add that char to the array at the next index
      
       //return the array
       return null;
   }
  
/**
*
*/
   public static int search(int [] valNums, int target, int inum)
   {     
   /*
if ( num is equal to the length )
return a negative number
otherwise if the value at num is equal to the target
return num
else
return call with list, target and num plus 1
*/
      return 0;
   }

Answer 1

public static int[] setNums(String vals) {
    //this is a helper method to convert a string to an array for searching purposes
    //declare and instantiate an array with length as the number of chars in vals

    //lopp through each char in vals
    //add that char to the array at the next index

    //return the array
    int[] arr = new int[vals.length()];

    for (int i = 0; i < vals.length(); i++) {
        arr[i] = vals.charAt(i);
    }

    return arr;
}

public static int search(int[] valNums, int target, int inum) {
    /*
        if (num is equal to the length)
            return a negative number
        otherwise if the value at num is equal to the target
            return num
        else
            return call with list, target and num plus 1
    */
    if (inum == valNums.length)
        return -1;
    else if (valNums[inum] == target)
        return inum;
    else
        return search(valNums, target, inum + 1);
}