Syntax error Sum is to be calculated for the numbers in between the array's max and min value JavaScript

Sum is to be calculated for the numbers in between the array's max and min value JavaScript

We are required to write a function, say sumBetween() that takes in an array [a,b] of two elements and returns the sum of all the elements between a and b including a and b.

For example −

[4, 7] = 4+5+6+7 = 22
[10, 6] = 10+9+8+7+6 = 40

Let’s write the code for this function −

Example

const arr = [10, 60];
const sumUpto = (n) => (n*(n+1))/2;
const sumBetween = (array) => {
   if(array.length !== 2){
      return -1;
   }
   const [a, b] = array;
   return sumUpto(Math.max(a, b)) - sumUpto(Math.min(a, b)) + Math.min(a,b);
};
console.log(sumBetween(arr));
console.log(sumBetween([4, 9]));

Output

The output in the console will be −

1785
39
Updated on: 2020-08-20T06:27:00+05:30

158 Views

Kickstart Your Career

Get certified by completing the course

Get Started
Advertisements