Question

How to sum array values in a given range with JavaScript

Answer 1

function sumRangeValues(arr, from, to) {
    let sum = 0;
    const size = arr.length;
    for (let i = 0; i < size; i++) {
        if (i >= from && i <= to)
            sum += arr[i];
        }
    return sum;
}
         
         
const arr = [ 3, 6, 0, 9, 1, 2, 8, 7, 4, 17 ];
const from = 3, to = 7;
   
console.log(sumRangeValues(arr, from, to));
  
  
  
      
         
/*
run:
         
27
         
*/

 

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