find average of array code example

Example 1: how to calculate average of array in javascript

const arrAvg = arr => arr.reduce((a,b) => a + b, 0) / arr.length

Example 2: average of an array js

const avg = arr => {
  const sum = arr.reduce((acc, cur) => acc + cur);
  const average = sum/arr.length;
  return average;
}

console.log(avg([1, 2, 3, 7, 8]));

Example 3: find average of numbers in array java

public class JavaExample {

    public static void main(String[] args) {
        double[] arr = {19, 12.89, 16.5, 200, 13.7};
        double total = 0;

        for(int i=0; i<arr.length; i++){
        	total = total + arr[i];
        }


        /* arr.length returns the number of elements 
         * present in the array
         */
        double average = total / arr.length;
        
        /* This is used for displaying the formatted output
         * if you give %.4f then the output would have 4 digits
         * after decimal point.
         */
        System.out.format("The average is: %.3f", average);
    }
}

Example 4: getting average of array javascript

var total = 0;
for(var i = 0; i < grades.length; i++) {
    total += grades[i];
}
var avg = total / grades.length;