ds-algo-study/DS-n-Algos/ALGO/UNSORTED/SumRange.js

Just experimenting with publishing a package

//We'll pass you an array of two numbers. Return the sum of those two numbers plus the sum of all the numbers between them.
function sumofall(arr){
    let sum = 0;
    for(let i = Math.min(...arr); i <= Math.max(...arr); i++){
    sum += i;
    }
    return sum;
}
 console.log(sumofall([10,5]))
 
// function sumofall(arr){
//     let count = Math.abs(arr[0]-arr[1])+1 
              // ex. There are |1-4| + 1 = 4, (1, 2, 3, 4), 4 numbers between 1 and 4. 
//     let sum = ((arr[0]+arr[1])*count) / 2
//     return sum
// }