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index.js
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index.js
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var finances = [
['Jan-2010', 867884],
['Feb-2010', 984655],
['Mar-2010', 322013],
['Apr-2010', -69417],
['May-2010', 310503],
['Jun-2010', 522857],
['Jul-2010', 1033096],
['Aug-2010', 604885],
['Sep-2010', -216386],
['Oct-2010', 477532],
['Nov-2010', 893810],
['Dec-2010', -80353],
['Jan-2011', 779806],
['Feb-2011', -335203],
['Mar-2011', 697845],
['Apr-2011', 793163],
['May-2011', 485070],
['Jun-2011', 584122],
['Jul-2011', 62729],
['Aug-2011', 668179],
['Sep-2011', 899906],
['Oct-2011', 834719],
['Nov-2011', 132003],
['Dec-2011', 309978],
['Jan-2012', -755566],
['Feb-2012', 1170593],
['Mar-2012', 252788],
['Apr-2012', 1151518],
['May-2012', 817256],
['Jun-2012', 570757],
['Jul-2012', 506702],
['Aug-2012', -1022534],
['Sep-2012', 475062],
['Oct-2012', 779976],
['Nov-2012', 144175],
['Dec-2012', 542494],
['Jan-2013', 359333],
['Feb-2013', 321469],
['Mar-2013', 67780],
['Apr-2013', 471435],
['May-2013', 565603],
['Jun-2013', 872480],
['Jul-2013', 789480],
['Aug-2013', 999942],
['Sep-2013', -1196225],
['Oct-2013', 268997],
['Nov-2013', -687986],
['Dec-2013', 1150461],
['Jan-2014', 682458],
['Feb-2014', 617856],
['Mar-2014', 824098],
['Apr-2014', 581943],
['May-2014', 132864],
['Jun-2014', 448062],
['Jul-2014', 689161],
['Aug-2014', 800701],
['Sep-2014', 1166643],
['Oct-2014', 947333],
['Nov-2014', 578668],
['Dec-2014', 988505],
['Jan-2015', 1139715],
['Feb-2015', 1029471],
['Mar-2015', 687533],
['Apr-2015', -524626],
['May-2015', 158620],
['Jun-2015', 87795],
['Jul-2015', 423389],
['Aug-2015', 840723],
['Sep-2015', 568529],
['Oct-2015', 332067],
['Nov-2015', 989499],
['Dec-2015', 778237],
['Jan-2016', 650000],
['Feb-2016', -1100387],
['Mar-2016', -174946],
['Apr-2016', 757143],
['May-2016', 445709],
['Jun-2016', 712961],
['Jul-2016', -1163797],
['Aug-2016', 569899],
['Sep-2016', 768450],
['Oct-2016', 102685],
['Nov-2016', 795914],
['Dec-2016', 60988],
['Jan-2017', 138230],
['Feb-2017', 671099]
];
/*
SOLUTION 1: 4N
// const getTotal = () => {
// let total = 0;
// for (let i = 0; i < finances.length; i++) {
// total += finances[i][1];
// }
// return total
// }
// const calculateAverageChange = () => {
// let totalChanges = 0;
// for (let i = 0; i < finances.length; i++) {
// if (i == 0) {
// continue
// }
// const change = finances[i][1] - finances[i - 1][1]
// totalChanges += change;
// }
// const average = totalChanges / (finances.length - 1);
// return average.toFixed(2);
// }
// const calculateHighestProfit = () => {
// let highestProfitIndex = 0;
// let highestProfit = 0;
// for (let i = 0; i < finances.length; i++) {
// const profit = finances[i][1];
// if (profit > highestProfit) {
// highestProfitIndex = i;
// highestProfit = profit;
// }
// }
// const highestProfitObject = finances[highestProfitIndex];
// return `${highestProfitObject[0]} (${highestProfitObject[1]})`;
// }
// const calculateHighestLoss = () => {
// let highestLossIndex = 0;
// let highestLoss = 0;
// for (let i = 0; i < finances.length; i++) {
// const loss = finances[i][1];
// if (loss < highestLoss) {
// highestLossIndex = i;
// highestLoss = loss;
// }
// }
// const highestLossObject = finances[highestLossIndex];
// return `${highestLossObject[0]} (${highestLossObject[1]})`;
// }
// console.log("Financial Analysis");
// console.log("----------------------------");
// console.log(`Total months: ${finances.length}`);
// console.log(`Total: ${getTotal()}`);
// console.log(`Average Change: ${calculateAverageChange()}`);
// console.log(`Greatest Increase in Profits: ${calculateHighestProfit()}`);
// console.log(`Greatest Decrease in Profits: ${calculateHighestLoss()}`);
*/
// SOLUTION 2 - 0N
let totalProfit = 0;
let totalChanges = 0;
let greatestProfitMonth = [];
let greatestProfit = 0
let greatestLossMonth = [];
let greatestLoss = 0;
for (let i = 0; i < finances.length; i++) {
// monthly profit/loss
const monthlyRevenue = finances[i][1];
// total profit
totalProfit += monthlyRevenue;
// total changes
if (i != 0) {
const change = monthlyRevenue - finances[i - 1][1]
totalChanges += change;
}
// greatest profit
if (monthlyRevenue > greatestProfit) {
greatestProfitMonth = finances[i];
greatestProfit = monthlyRevenue;
}
// greatest loss
if (monthlyRevenue < greatestLoss) {
greatestLossMonth = finances[i];
greatestLoss = monthlyRevenue;
}
}
console.log("Financial Analysis");
console.log("----------------------------");
console.log(`Total months: ${finances.length}`);
console.log(`Total: $${totalProfit}`);
const average = totalChanges / (finances.length - 1);
console.log(`Average Change: $${average.toFixed(2)}`);
console.log(`Greatest Increase in Profits: ${greatestProfitMonth[0]} ($${greatestProfitMonth[1]})`);
console.log(`Greatest Decrease in Profits: ${greatestLossMonth[0]} ($${greatestLossMonth[1]})`);