Write a program to calculate the average (format to 2 decimal points) of a set of data, also find max and min values of data. All the data are stored in a file (file name would be data.txt). The 1st number in the file is the total number (N, integer) of data; the rest data in the file are N real numbers. The program MUST have the following three methods, A method named findAvg that calculates the average of the data. public static double findAvg (double[ ] arr) //input to the method is the an 1D array //output of the method is the average. A method named findMaxMin that finds the max and min values of the data. public static double[ ] findMaxMin (double[ ] arr) //input to the method is the an 1D array //output of the method is 1D array with two values, 1st one is max value, 2nd one is min value. A method named printData that print the data, the average, the max value, and the min value. public static void printData(double[ ] arr, double avg , double[ ] MaxMin) //input to the method are an 1D array of the data, average, 1D array with max and min values Hint: You also need to use Scanner, FileInputStream, and IOException classes. Here is an example of the content in a data file ( 5 real numbers): 5 85.5 72 64.5 160.5 88.91 Here is an example of output Enter the file name: The file name is data.txt The data in the file are 85.5 72.0 64.5 160.5 88.91 The average is 94.28 The max and min values are 160.5 and 64.5
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All the data are stored in a file (file name would be data.txt).
The 1st number in the file is the total number (N, integer) of data; the rest data in the file are N real numbers.
The program MUST have the following three methods,
A method named findAvg that calculates the average of the data.
public static double findAvg (double[ ] arr) //input to the method is the an 1D array //output of the method is the average.
A method named findMaxMin that finds the max and min values of the data.
public static double[ ] findMaxMin (double[ ] arr) //input to the method is the an 1D array //output of the method is 1D array with two values, 1st one is max value, 2nd one is min value.
A method named printData that print the data, the average, the max value, and the min value.
public static void printData(double[ ] arr, double avg , double[ ] MaxMin) //input to the method are an 1D array of the data, average, 1D array with max and min values
Hint: You also need to use Scanner, FileInputStream, and IOException classes.
Here is an example of the content in a data file ( 5 real numbers):
5 85.5 72 64.5 160.5 88.91
Here is an example of output
Enter the file name: The file name is data.txt The data in the file are 85.5 72.0 64.5 160.5 88.91 The average is 94.28 The max and min values are 160.5 and 64.5
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