arraySum function
Return the sum of all elements of the array
Examples
var n = Array([1, 2, 3]);
print(arraySum(n));
/* output:
6.0
*/
Implementation
double arraySum(Array a) {
var sum = 0.0;
for (var i = 0; i < a.length; i++) {
sum += a[i];
}
return sum;
}