ESTIMATOR

code.js

function estimate(arr) {
  return arr.reduce(function(prev, curr, index, array){
    return prev + convertToValue(curr.toString());
  }, 0);
}

function estimateRisk(arr){
  return arr.reduce(function(prev, curr, index, array){
    return prev + convertToRisk(curr.toString());
  }, 0);
}

function convertToRisk(story){
  switch(story.toLowerCase()){
    case "s":
      return .15;
    case "m":
      return .5;
    case "l":
      return 1;
    case "xl": 
      return 5;
    default:
      return 0;
  }
}

function convertToValue(story){
  
  switch(story.toLowerCase()){
    case "s":
      return .5;
    case "m":
      return 2.5;
    case "l":
      return 5;
    case "xl": 
      return 15;
    default:
      return 0;
  }
}