SUM OF SUBARRAY BETWEEN TWO INDEXES

function subarraySum(arr, start, end) {
let sum = 0;
for (let i = start; i <= end; i++) {
sum += arr[i];
}
return sum;
}

// Example usage0
const array = [1, 2, 3, 4, 5];
const start_index = 1;
const end_index = 3;

const result = subarraySum(array, start_index, end_index);
console.log(result); // Output: 9 (2 + 3 + 4 = 9)