How to use For Loop In Javascript
In this approach, we are using the for loop to iterate over the input array and we are calculating the mean at each position and printing the mean at each point using the console.log function.
Example: In this example, we will find the mean at every point in JavaScript using For Loop.
const arr = [1, 2, 3, 4, 5];
let s = 0;
for (let i = 0; i < arr.length; i++) {
s += arr[i];
const res = s / (i + 1);
console.log(`Mean at position ${i + 1}: ${res}`);
}
Output
Mean at position 1: 1 Mean at position 2: 1.5 Mean at position 3: 2 Mean at position 4: 2.5 Mean at position 5: 3
Finding Mean at Every Point in JavaScript Array
We have given the array of numbers and our task is to find the mean at every position in the array using JavaScript. Below we have added the example for a better understanding of the problem statement.
Example:
Input: arr = [1, 2, 3, 4, 5]
Output:
Mean at position 1: 1
Mean at position 2: 1.5
Mean at position 3: 2
Mean at position 4: 2.5
Mean at position 5: 3
Explanation:
Cumulative Sum: 1, Mean: 1/1 = 1
Cumulative Sum: 1 + 2 = 3, Mean: 3/2 = 1.5
Cumulative Sum: 1 + 2 + 3 = 6, Mean: 6/3 = 2
Cumulative Sum: 1 + 2 + 3 + 4 = 10, Mean: 10/4 = 2.5
Cumulative Sum: 1 + 2 + 3 + 4 + 5 = 15, Mean: 15/5 = 3
We can find this mean using three different methods which are stated below:
Table of Content
- Using For Loop
- Using the Array Map Method
- Using the Array Reduce Method