Answer:
Complete code is given below:
Explanation:
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;
public class ArrayCalcs {
private int size;
String [] parts =null;
// based on number of elements in file, array will create.
double[] arr=null;
public void readFile(String file){
try{
FileReader fr = new FileReader(file+".txt");
BufferedReader br = new BufferedReader(fr);
String line = br.readLine();
int count = 0;
while (line != null) {
parts = line.split(" ");
for( String w : parts)
{
count++;
}
line = br.readLine();
}
size=count;
arr=new double[size];
for(int i=0;i<size;i++){
arr[i]=Double.parseDouble(parts[i]);
}
// System.out.println(count);
// System.out.println(Arrays.toString(parts));
System.out.println(Arrays.toString(arr));
} catch (FileNotFoundException ex){
System.out.println("This file does not exist");
} catch (IndexOutOfBoundsException e){
System.out.println("Thie file has more than 7 lines");}
catch (IOException e) {
System.out.println(e.getMessage());
}
}
public double getTotal(){
double sum=0.0;
for(double d:arr){
sum=sum+d;
}
return sum;
}
public double getAverage(){
double avg=getTotal()/arr.length;
return avg;
}
public double getHighest(){
double high=arr[0];
for(int i=0;i<arr.length-1;i++){
if(arr[i] > high)
high = arr[i];
}
return high;
}
public double getLowest(){
double low=arr[0];
for(int i=0;i<arr.length-1;i++){
if(arr[i] < low)
low= arr[i];
}
return low;
}
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
System.out.println("Enter file name:");
String file=s.next();
ArrayCalcs ac=new ArrayCalcs();
ac.readFile(file);
System.out.println(" Highest Element: "+ac.getHighest());
System.out.println("Lowest Element: "+ac.getLowest());
System.out.println("Total: "+ac.getTotal());
System.out.println("Average: "+ac.getAverage());
}
}
.