I have this recursive method that counts the amount of negative numbers that lie in the array called "NumArray"

``````public static int countNegative(double[] NumArray, int startIndex, int endIndex)
{
if (startIndex == endIndex)
{
if (NumArray[startIndex] < 0)
{
return 1;
}

else

return 0;
}

else if (NumArray[endIndex] < 0)
{
return 1 + countNegative(NumArray, startIndex, endIndex - 1);
}

else

return countNegative(NumArray, startIndex, endIndex - 1);``````

In my main code I use this print state to print it:

``````int negCount = countNegative(NumArray, 0, NumArray.length -1); //setting negCount equal to the method

System.out.println ("The total count of negative numbers is " + negCount + ('\n'));``````

When I start the program and I put in a negative numbers it won't print after when a 0 is entered //When 0 is entered it'll stop taking in inputs from the user and display the amount I have.

Am I doing something wrong? Is my recursive method not reading in negative values?

## Recommended Answers

Hi BboyRodimus,

How are you populating NumArray? I tried your code by declaring and initializing NumArray in main() and it works.

``````public static void main(String[] args) {
double[] numArray = {0,-1, -2, 5, 6, 0, -2.5, -3.5, 0, -74};

int negCount = countNegative(numArray, 0, numArray.length -1); …``````

## All 2 Replies

Hi BboyRodimus,

How are you populating NumArray? I tried your code by declaring and initializing NumArray in main() and it works.

``````public static void main(String[] args) {
double[] numArray = {0,-1, -2, 5, 6, 0, -2.5, -3.5, 0, -74};

int negCount = countNegative(numArray, 0, numArray.length -1);
System.out.println("The total count of negative numbers is " +
negCount + "\n");

}``````

I'm guessing could be a different part of your program that's causing the problem.

I'm new to Java myself and I wouldn't be surprised of some of the Java pros jump in and spot the problem right away :)

The code you have posted here seems fine. Can you post the code that prompts the user for input?

Be a part of the DaniWeb community

We're a friendly, industry-focused community of 1.21 million developers, IT pros, digital marketers, and technology enthusiasts learning and sharing knowledge.