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| 1 | + |
| 2 | +// ----------------------------------------------------------------------------- |
| 3 | +// Coding Challenge 5 |
| 4 | +// ----------------------------------------------------------------------------- |
| 5 | + |
| 6 | +/* |
| 7 | +Remember the tip calculator challenge? |
| 8 | +Let's create a more advanced version using everything we learned! |
| 9 | + |
| 10 | +This time, John and his family went to 5 different restaurants. The bills were |
| 11 | +124,ドル 48,ドル 268,ドル 180ドル and 42ドル. John likes to tip 20% of the bill when the bill |
| 12 | +is less than 50,ドル 15% when the bill is between 50ドル and 200,ドル and 10% if the bill |
| 13 | +is more than 200ドル. |
| 14 | + |
| 15 | +Implement a tip calculator using objects and loops: |
| 16 | + 1. Create an object with an array for the bill values |
| 17 | + 2. Add a method to calculate the tip |
| 18 | + 3. This method should include a loop to iterate over all the paid bills and |
| 19 | + do the tip calculations |
| 20 | + 4. As an output, create 1) a new array containing all tips, and 2) an array |
| 21 | + containing final paid amounts (bill + tip). HINT: Start with two empty |
| 22 | + arrays [] as properties and then fill them up in the loop. |
| 23 | + |
| 24 | +EXTRA AFTER FINISHING: |
| 25 | +Mark's family also went on a holiday, going to 4 different restaurants. The bills |
| 26 | +were 77,ドル 375,ドル 110,ドル and 45ドル. Mark likes to tip 20% of the bill when the bill is |
| 27 | +less than 100,ドル 10% when the bill is between 100ドル and 300,ドル and 25% if the bill is |
| 28 | +more than 300ドル (different than John). |
| 29 | + |
| 30 | + 5. Implement the same functionality as before, this time using Mark's tipping rules |
| 31 | + 6. Create a function (not a method) to calculate the average of a given array of tips. |
| 32 | + HINT: Loop over the array, and in each iteration store the current sum in a |
| 33 | + variable (starting from 0). After you have the sum of the array, divide it by |
| 34 | + the number of elements in it (that's how you calculate the average) |
| 35 | + 7. Calculate the average tip for each family |
| 36 | + 8. Log to the console which family paid the highest tips on average |
| 37 | + |
| 38 | +GOOD LUCK 😀 |
| 39 | +*/ |
| 40 | + |
| 41 | +var john = { |
| 42 | + fullName: "John", |
| 43 | + bills: [124, 48, 268, 180, 42], |
| 44 | + tips: [], |
| 45 | + totals: [], |
| 46 | + calcOneTip: function(amount) { |
| 47 | + if (amount < 50) { |
| 48 | + return (20 / 100) * amount; |
| 49 | + } else if (amount >= 50 && amount <= 200) { |
| 50 | + return (15 / 100) * amount; |
| 51 | + } else { |
| 52 | + return (10 / 100) * amount; |
| 53 | + } |
| 54 | + }, |
| 55 | + calcAllTips: function() { |
| 56 | + for (var i = 0; i < this.bills.length; i++) { |
| 57 | + this.tips.push(this.calcOneTip(this.bills[i])); |
| 58 | + } |
| 59 | + }, |
| 60 | + calcTotals: function() { |
| 61 | + for (var i = 0; i < this.bills.length; i++) { |
| 62 | + this.totals.push(this.bills[i] + this.tips[i]); |
| 63 | + } |
| 64 | + } |
| 65 | +} |
| 66 | +john.calcAllTips(); |
| 67 | +john.calcTotals(); |
| 68 | +console.dir(john); |
| 69 | + |
| 70 | +var mark = { |
| 71 | + fullName: "Mark", |
| 72 | + bills: [77, 375, 110, 45], |
| 73 | + tips: [], |
| 74 | + totals: [], |
| 75 | + calcOneTip: function(amount) { |
| 76 | + if (amount < 100) { |
| 77 | + return (20 / 100) * amount; |
| 78 | + } else if (amount >= 100 && amount <= 300) { |
| 79 | + return (10 / 100) * amount; |
| 80 | + } else { |
| 81 | + return (25 / 100) * amount; |
| 82 | + } |
| 83 | + }, |
| 84 | + calcAllTips: function() { |
| 85 | + for (var i = 0; i < this.bills.length; i++) { |
| 86 | + this.tips.push(this.calcOneTip(this.bills[i])); |
| 87 | + } |
| 88 | + }, |
| 89 | + calcTotals: function() { |
| 90 | + for (var i = 0; i < this.bills.length; i++) { |
| 91 | + this.totals.push(this.bills[i] + this.tips[i]); |
| 92 | + } |
| 93 | + } |
| 94 | +} |
| 95 | +mark.calcAllTips(); |
| 96 | +mark.calcTotals(); |
| 97 | +console.dir(mark); |
| 98 | + |
| 99 | +function calcAverage(tips) { |
| 100 | + var sum = 0; |
| 101 | + for (var i = 0; i < tips.length; i++) { |
| 102 | + sum += tips[i]; |
| 103 | + } |
| 104 | + return sum / tips.length; |
| 105 | +} |
| 106 | + |
| 107 | +john.average = calcAverage(john.tips); |
| 108 | +console.log(`${john.fullName}'s average tips = ${john.average}`); |
| 109 | + |
| 110 | +mark.average = calcAverage(mark.tips); |
| 111 | +console.log(`${mark.fullName}'s average tips = ${mark.average}`); |
| 112 | + |
| 113 | +if (john.average > mark.average) { |
| 114 | + console.log(`${john.fullName} paid the highest tips on average`) |
| 115 | +} else if (mark.average > john.average) { |
| 116 | + console.log(`${mark.fullName} paid the highest tips on average`) |
| 117 | +} else { |
| 118 | + console.log(`${john.fullName} and ${mark.fullName} paid the same tips on average`) |
| 119 | +} |
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