ArraySum.swift

ArraySum.swift

func sumOf(elements:(value:Int, weight:Int)...) -> Int {
 
    var tWeight = 0;
    var sum = 0
    for element in elements {
        sum += element.value;
        tWeight += element.weight;
    }
   
    return (sum/tWeight);
}
 
sumOf((value:14,weight:3),(value:20, weight:2),(value:15, weight:1));