Cost of a planned route

easylogisticsTypeScript

A route is a list of legs; each leg has a distance and a per-kilometre rate. Sum the cost of the whole route.

routeCost(legs: list<Leg>) → int

Where you start

function routeCost(legs: Leg[]): number {
  
}

Call	Result
`routeCost([{"distance":10,"rate":5},{"distance":4,"rate":8}])`	`82`
`routeCost([{"distance":1,"rate":1000}])`	`1000`
`routeCost([])`	`0`
`routeCost([{"distance":0,"rate":500}])`	`0`

Multiply per leg and add.

Reference solution in TypeScript

function routeCost(legs: Leg[]): number {
  let total = 0;
  for (const leg of legs) total += leg.distance * leg.rate;
  return total;
}