public static int GetNextValidNumber(int digit)
{
int minimum = 0;
int[] numbers = IntegerHelper.IntToIntArray(digit);
for (int index = 0; index < numbers.Length; index++)
{
if (minimum <= numbers[index])
{
minimum = numbers[index];
}
else
{
UpdateArray(index, numbers, minimum);
}
}
int newDigit = IntegerHelper.IntArrayToInt(numbers);
if (!ContainsDuplicates(numbers))
{
newDigit++;
return(GetNextValidNumber(newDigit));
}
return(newDigit);
public void IntegerHelper_IntArrayToInt()
{
var testData = new List <(int[] array, int expected)>
{
(new[] { 2, 6, 4, 7, 9, 3 }, 264793),
(new[] { 0, 2 }, 2),
};
foreach (var data in testData)
{
int result = IntegerHelper.IntArrayToInt(data.array);
Assert.Equal(data.expected, result);
}
}