adding exam preparation

Author: trayanaboykova

exams/exam-preparation/01-agency-profit.js

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+function agencyProfit(input) {
+    let airlineName = input[0];
+    let adultTickets = Number(input[1]);
+    let childTickets = Number(input[2]);
+    let adultTicketPrice = Number(input[3]);
+    let serviceFee = Number(input[4]);
+
+    let childTicketPrice = adultTicketPrice * 0.3;
+    let totalAdultPrice = adultTickets * (adultTicketPrice + serviceFee);
+    let totalChildPrice = childTickets * (childTicketPrice + serviceFee);
+    let totalProfit = (totalAdultPrice + totalChildPrice) * 0.2;
+
+    console.log(`The profit of your agency from ${airlineName} tickets is ${totalProfit.toFixed(2)} lv.`);
+}

exams/exam-preparation/02-cat-walking.js

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+function catWalk(input) {
+    let minutesPerWalk = Number(input[0]);
+    let walksPerDay = Number(input[1]);
+    let caloriesIntakePerDay = Number(input[2]);
+
+    let totalMinutesPerDay = minutesPerWalk * walksPerDay;
+    let burnedCaloriesPerDay = totalMinutesPerDay * 5;
+
+    if (burnedCaloriesPerDay >= caloriesIntakePerDay * 0.5) {
+        return `Yes, the walk for your cat is enough. Burned calories per day: ${burnedCaloriesPerDay}.`;
+    } else {
+        return `No, the walk for your cat is not enough. Burned calories per day: ${burnedCaloriesPerDay}.`;
+    }
+}

exams/exam-preparation/03-club.js

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+function calculateDrinkCost(input) {
+    let drink = input[0];
+    let sugar = input[1];
+    let quantity = Number(input[2]);
+
+    let price = 0;
+    switch (drink) {
+        case 'Espresso':
+            price = (sugar === 'Without') ? 0.90 * 0.65 : (sugar === 'Normal') ? 1.00 : 1.20;
+            if (quantity >= 5) price *= 0.75;
+            break;
+        case 'Cappuccino':
+            price = (sugar === 'Without') ? 1.00 * 0.65 : (sugar === 'Normal') ? 1.20 : 1.60;
+            break;
+        case 'Tea':
+            price = (sugar === 'Without') ? 0.50 * 0.65 : (sugar === 'Normal') ? 0.60 : 0.70;
+            break;
+    }
+
+    let totalCost = price * quantity;
+
+    if (totalCost > 15) {
+        totalCost *= 0.80;
+    }
+
+    return `You bought ${quantity} cups of ${drink} for ${totalCost.toFixed(2)} lv.`;
+}

exams/exam-preparation/04-trekking-mania.js

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+function trekkingMania(input) {
+    let groups = Number(input[0]);
+    let musala = 0, monblan = 0, kilimanjaro = 0, k2 = 0, everest = 0;
+    let totalPeople = 0;
+
+    for(let i = 1; i <= groups; i++) {
+        let peopleInGroup = Number(input[i]);
+        totalPeople += peopleInGroup;
+
+        if (peopleInGroup <= 5){
+            musala += peopleInGroup;
+        } else if (peopleInGroup > 5 && peopleInGroup <= 12) {
+            monblan += peopleInGroup;
+        } else if (peopleInGroup > 12 && peopleInGroup <= 25) {
+            kilimanjaro += peopleInGroup;
+        } else if (peopleInGroup > 25 && peopleInGroup <= 40) {
+            k2 += peopleInGroup;
+        } else {
+            everest += peopleInGroup;
+        }
+    }
+
+    let result = [
+        (musala / totalPeople) * 100,
+        (monblan / totalPeople) * 100,
+        (kilimanjaro / totalPeople) * 100,
+        (k2 / totalPeople) * 100,
+        (everest / totalPeople) * 100
+    ].map(x => `${x.toFixed(2)}%`).join('\n');
+
+    return result;
+}

exams/exam-preparation/05-movie-stars.js

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+function movieStars(input) {
+    let budget = Number(input[0]);
+    let remainingBudget = budget;
+    let i = 1;
+
+    while (input[i] != "ACTION") {
+        let actorName = input[i];
+        let payment;
+        if (actorName.length <= 15) {
+            payment = Number(input[++i]);
+        } else {
+            payment = remainingBudget * 0.2;
+        }
+
+        remainingBudget -= payment;
+
+        if (remainingBudget < 0) {
+            let neededBudget = Math.abs(remainingBudget);
+            return `We need ${neededBudget.toFixed(2)} leva for our actors.`;
+        }
+
+        i++;
+    }
+
+    return `We are left with ${remainingBudget.toFixed(2)} leva.`;
+}

exams/exam-preparation/06-basketball-tournament.js

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+function basketballTournaments(input) {
+    let totalMatches = 0;
+    let wins = 0;
+    let losses = 0;
+    let i = 0;
+
+    while (input[i] !== "End of tournaments") {
+        let tournamentName = input[i++];
+        let matches = Number(input[i++]);
+
+        for (let j = 0; j < matches; j++) {
+            let desiPoints = Number(input[i++]);
+            let opponentPoints = Number(input[i++]);
+
+            let difference = Math.abs(desiPoints - opponentPoints);
+
+            if (desiPoints > opponentPoints) {
+                console.log(`Game ${j + 1} of tournament ${tournamentName}: win with ${difference} points.`);
+                wins++;
+            } else {
+                console.log(`Game ${j + 1} of tournament ${tournamentName}: lost with ${difference} points.`);
+                losses++;
+            }
+
+            totalMatches++;
+        }
+    }
+
+    let winPercentage = (wins / totalMatches) * 100;
+    let lossPercentage = (losses / totalMatches) * 100;
+
+    console.log(`${winPercentage.toFixed(2)}% matches win`);
+    console.log(`${lossPercentage.toFixed(2)}% matches lost`);
+}