Int and Double help

Question

I have a new lab and have most everything down right except that I am trying to create an int array that has double methods within it here is what I have so far:
       public static void main(String[] args) {
               Scanner in = new Scanner(System.in);
               System.out.print("How many numbers? ");
               int numNum = in.nextInt();
               System.out.print("How many intervals? ");
               int intervals = in.nextInt();
               System.out.print("\nHistogram");
               System.out.print("\n--------------------------------------------------------");
               double[] n = Generator.getData(numNum);
               double min = getMin(n);
               double max = getMax(n);
               double range = max-min;
               double width = (range/intervals);
               int[] histogram = new int [intervals];
               for(int index = 1; index <= intervals; index++){
                       if(index <= intervals){
                               histogram[index] = ();
               for     (int i = 1; i <= intervals; i++){
                       System.out.print("\n   " + i);
                       System.out.print(" " + range);
               System.out.print("\n--------------------------------------------------------");
       private static double getMin(double[]n){
               double lowest = n[0];
               for (int index =1; index < n.length; index++){
                       if (n[index] < lowest){
                               lowest = n[index];
               return lowest;
       private static double getMax(double[]n){
               double highest = n[0];
               for (int index =1; index < n.length; index++){
                       if (n[index] > highest){
                               highest = n[index];
               return highest;
       private static int getArray(double[]n,double intervals, double width){
               int[] array = new int [intervals];
               for(int index=0; index <= intervals; index++ ){
                       if(index <= intervals){
                               array[index] = (n[index]/width);
               return array;
       }I am stuck of the getArray class. Any help is greatly appreciated.

Answer 1

haphilli wrote:
I appreciate the help I am still just not getting it it is supposed to return this:
How many numbers? 100
How many intervals? 10
Histogram
1 ****(4)
2 ******(6)
3 ***********(11)
4 *****************(17)
5 **************************(26)
6 *************************(25)
7 *******(7)
8 ***(3)
9 (0)
10 *(1)
The program performs the following actions:
1. Ask the user to enter the number of numbers that will be generated and the number of intervals that will be used in the histogram, and input the two values;
2. Generate the required number of pseudo-random numbers by using the double[] Generator.getData(int n), which, given the number of numbers to generate, n, returns an array of double of size n containing the generated numbers;
3. Compute the range of data values (by finding the maximum and the minimum and taking their difference); then compute the width of each equally-sized interval (by dividing the whole range by the number of intervals specified by the user); finally, compute the number of data numbers falling in each interval and store these frequencies in an array of integers;
4. Output the histogram of the data as displayed in the sample run above: each bar starts with an index (1 through the number of intervals), followed by a number of '*' equal to the number of numbers in that range, followed by the number of '*' in parentheses.
Note: Pay attention to detail. Make your output look like the output in the sample run. However, note that your program must be able to produce the correct histogram for arbitrary data, not just for the specific data generated by Generator.getData().Yes, but we're thus far not addressing the proper operation of your code - we're still in the debugging phase.
After the code compiles cleanly, and you get all the obvious "mechanical" things fixed, then we can start addressing the design.
Why do I say that? Ordinarily the design comes first. But there are some syntax issues that really need to be addressed before you can appreciate what is wrong with the logic flow. You can work out the design in your head, but let's fix syntax errors before we code it up, so that we all have a good understanding of the the mechanicals.