Thread: calling up and printing an arrayHistogram

I'm writing a method called arrayhist that has an array of 30 random integers and returns a new histogram array that has 11 elements with this content:
element 0 -- number of elements in the array that are <= 0
1 -- number of elements in the array that are == 1
2 -- number of elements in the array that are == 2
...
9 -- number of elements in the array that are == 9
10 -- number of elements in the array that are >= 1
0
Also, how do I get my solution to only traverse the array once?

public static int[] arrayHist(int[] arr) {
		int[] hist = new int[11];
 
		for(int i = 0; i < arr.length; i++) {
			int val = arr[i];
			if (val <= 0) {
				hist[0]++; 
			} else if (val >= 10) {
				hist[10]++;
			} else {
				hist[val]++; 
			}
		}
		return hist;
	}

I'm having trouble with calling and printing the method from main.

static method like yours "public static int[] arrayHist(int[] arr)" can be used in a dynamic method main
you need to change the method like this public int[] arrayHist(int[] arr)
and then you can add one method to printed like "public void printHist(int[]hist)"
and then in the main method you need to instantiated the class to an object, then calling both method

public static void main(String []ag){
int arr[]=new in arr[fixedNumber];//define
int hist[]=new int[fixedNumber];
NewClass a= new NewClass();
hist=a.arrayHist(arr);
a.printHist(hist);
}