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212 changes: 195 additions & 17 deletions src/functions-and-arrays.js
Original file line number Diff line number Diff line change
@@ -1,43 +1,155 @@
// Iteration #1: Find the maximum
function maxOfTwoNumbers() {}


function maxOfTwoNumbers (x, y) {
if (x > y) {
return x;
} else if (x < y) {
return y;
} else {
return x; // or 'y' because they are the same
}
}

// Iteration #2: Find longest word
const words = ['mystery', 'brother', 'aviator', 'crocodile', 'pearl', 'orchard', 'crackpot'];

function findLongestWord() {}
function findLongestWord(words) {
if (words.length === 0) {
return null;
} else if (words.length === 1) {
return words[0];
}

let longest = words[0];

for (let i = 1; i < words.length; i++) {
if (words[i].length > longest.length) {
longest = words[i];
}
}

return longest;
}

// Iteration #3: Calculate the sum
const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];

function sumNumbers() {}
function sumNumbers(numbers) {
if (numbers.length === 0) {
return 0;
}

let totalSum = 0

for (let i = 0; i < numbers.length; i++) {
totalSum += numbers[i];
}

return totalSum;
}

// Iteration #3.1 Bonus:
function sum() {}

const mixedArr = [6, 12, 'miami', 1, true, 'barca', '200', 'lisboa', 8, 10];

function sum(mixedArr) {

let total = 0;

for (let i = 0; i < mixedArr.length; i++) {
const value = mixedArr[i];
if (typeof value === "number") {
total += value;
} else if (typeof value === "string") {
total += value.length; // Convierto el string a número utilizando su longitud
} else if (typeof value === "boolean") {
total += value ? 1 : 0; // True = 1, false = 0
} else {
throw new Error(`Unsupported data type at index ${i}: ${value}`)
}

}

return total;
}

// console.log(sum(mixedArr)); // should return: 57

// Iteration #4: Calculate the average

// Level 1: Array of numbers
const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];

function averageNumbers() {}
function averageNumbers(numbersAvg) {

if (numbersAvg.length === 0) {
return null;
}

let sum = 0;

for (let i = 0; i < numbersAvg.length; i++) {
sum += numbersAvg[i];
}

return sum / numbersAvg.length;

}

// console.log(averageNumbers(numbersAvg)); // Devuelve 6

// Level 2: Array of strings
const wordsArr = ['seat', 'correspond', 'linen', 'motif', 'hole', 'smell', 'smart', 'chaos', 'fuel', 'palace'];

function averageWordLength() { }
function averageWordLength(wordsArr) {

if (wordsArr.length === 0) {
return null;
}

let totalLength = 0;

for (let i = 0; i < wordsArr.length; i++) {
let word = wordsArr[i];
if (typeof word === "string"){
totalLength += word.length;
}
}

return totalLength / wordsArr.length;

}

// console.log(averageWordLength(wordsArr)); // Termina dando 5.3

// Bonus - Iteration #4.1
function avg() {}

const arr = [6, 12, 'miami', 1, true, 'barca', '200', 'lisboa', 8, 10];

function avg(arr) {

if (arr.length === 0) {
return null;
}

let sum = 0;

for (let i = 0; i < arr.length; i++) {
let value = arr[i];
if (typeof value === "number") {
sum += value;
} else if (typeof value === "string") {
sum += value.length;
} else if (typeof value === "boolean") {
sum += value ? 1 : 0;
}
}

return sum / arr.length;
}

// console.log(avg(arr));// should return: 5.7

// Iteration #5: Unique arrays

const wordsUnique = [
'crab',
'poison',
Expand All @@ -52,18 +164,46 @@ const wordsUnique = [
'bring'
];

function uniquifyArray() {}

function uniquifyArray(arrayOfWords) {
if (arrayOfWords.length === 0) {
return null;
}

let newArray = [];

for (let i = 0; i < arrayOfWords.length; i++){
let word = arrayOfWords[i];
if (newArray.includes(word) === false) {
newArray.push(word);
}
}

return newArray;
}

// console.log(uniquifyArray(wordsUnique)); // Da como resultado 8 palabras.

// Iteration #6: Find elements
const wordsFind = ['machine', 'subset', 'trouble', 'starting', 'matter', 'eating', 'truth', 'disobedience'];

function doesWordExist() {}
const wordsFind = ['machine', 'subset', 'trouble', 'starting', 'matter', 'eating', 'truth', 'disobedience'];

function doesWordExist(listOfWords, wordToFind) {

if (listOfWords.length === 0) {
return null;
}

if (listOfWords.includes(wordToFind)) {
return true;
} else {
return false;
}
}

// console.log(doesWordExist(wordsFind, 'starting'));

// Iteration #7: Count repetition

const wordsCount = [
'machine',
'matter',
Expand All @@ -78,9 +218,25 @@ const wordsCount = [
'matter'
];

function howManyTimes() {}
function howManyTimes(arrayOfWords, wordToCount) {

if (arrayOfWords === 0) {
return 0;
}

let appearances = 0;

for (let i = 0; i < arrayOfWords.length; i++) {
let word = arrayOfWords[i];
if (word === wordToCount) {
appearances += 1;
}
}

return appearances;
}

// console.log(howManyTimes(wordsCount, "subset"));

// Iteration #8: Bonus
const matrix = [
Expand All @@ -106,8 +262,30 @@ const matrix = [
[1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]
];

function greatestProduct() {}
function greatestProduct(matrix) {
let maxProduct = 0;

for (let row = 0; row < matrix.length; row++) {
for (let col = 0; col < matrix[row].length; col++) {

// Horizontal (derecha)
if (col + 3 < matrix[row].length) {
const horizontalProduct = matrix[row][col] * matrix[row][col + 1] * matrix[row][col + 2] * matrix[row][col + 3];
if (horizontalProduct > maxProduct) maxProduct = horizontalProduct;
}

// Vertical (abajo)
if (row + 3 < matrix.length) {
const verticalProduct = matrix[row][col] * matrix[row + 1][col] * matrix[row + 2][col] * matrix[row + 3][col];
if (verticalProduct > maxProduct) maxProduct = verticalProduct;
}
}
}

return maxProduct;
}

console.log(greatestProduct(matrix))



Expand All @@ -127,4 +305,4 @@ if (typeof module !== 'undefined') {
howManyTimes,
greatestProduct
};
}
}