ironhack-labs · MartinM9 · Jan 29, 2019
diff --git a/starter-code/src/functions-and-arrays.js b/starter-code/src/functions-and-arrays.js
@@ -1,4 +1,14 @@
 // Find the maximum
+let x = 0;
+function findMax(par) {
+  for(let i = 0; i < par.length; i++) {
+    if (par[i] > x) {
+      x = par[i];
+    }
+  }
+}
+findMax([1, 2, 3, 4, 6, 5]);
+console.log(x);

 // Finding Longest Word
 var words = [
@@ -11,14 +21,44 @@ var words = [
  'crackpot'
 ];

+function longestWord(word) {
+  var y = word[0];
+  for(let i = 0; i < word.length; i++) {
+    if(word[i].length > y.length) {
+       y = word[i];
+    }
+  } return y; 
+}
+console.log(longestWord(words));
+
 // Calculating a Sum

 var numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];

+function arrSum(arr) {
+  let x = 0;
+  for(let i = 0; i < arr.length; i++) {
+    x += arr[i];
+  }
+  return x;
+}
+
+console.log(arrSum(numbers));
+
 // Calculate the Average

 var numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];

+function arrAvg(arr) {
+  let x = 0;
+  for(let i = 0; i < arr.length; i++) {
+    x += arr[i];
+  }
+  return x/arr.length;
+}
+
+console.log(arrAvg(numbersAvg));
+
 // Array of Strings
 var wordsArr = [
  'seat',
@@ -33,6 +73,16 @@ var wordsArr = [
  'palace'
 ];

+function averageWordLength(arr) {
+  let x = 0;
+  for(let i = 0; i < arr.length; i++) {
+    x += arr[i].length;
+  }
+  return x/arr.length;
+}
+
+console.log(averageWordLength(wordsArr));
+
 // Unique Arrays
 var wordsUnique = [
  'crab',
@@ -48,6 +98,15 @@ var wordsUnique = [
  'bring'
 ];

+function uniquifyArray(arr) {
+  let x = arr.filter(function(val, index){
+    return arr.indexOf(val) == index;
+  });
+  return x;
+}
+
+console.log(uniquifyArray(wordsUnique));
+
 // Finding Elements
 var wordsFind = [
  'machine',
@@ -60,6 +119,18 @@ var wordsFind = [
  'disobedience'
 ];

+function doesWordExist(arr, word) {
+  for(let i = 0; i < arr.length; i++) {
+    if(word == arr[i]) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+}
+
+console.log(doesWordExist(wordsFind, 'asds'));
+
 // Counting Repetion
 var wordsCount = [
  'machine',
@@ -74,6 +145,18 @@ var wordsCount = [
  'disobedience',
  'matter'
 ];
+
+function howManyTimes(arr, val) {
+  let x = 0;
+    for(let i = 0; i < arr.length; i++) {
+      if(val == arr[i]) {
+        x++;
+      } 
+    }
+  return x;
+}
+
+console.log(howManyTimes(wordsCount, 'matter'));
 // Bonus Quest

 var matrix = [
@@ -98,3 +181,30 @@ var matrix = [
  [20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54],
  [1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]
 ];
+
+function greatestProduct(matrix) {
+  let fourNumbersProduct = 0;
+  let biggestProduct = 0;
+  // X line 
+  for(let i = 0; i < matrix.length; i++) {
+    for(let j = 0; j < matrix[i].length; j++) {
+      fourNumbersProduct = matrix[i][j] * matrix[i][j+1] * matrix[i][j+2] * matrix[i][j+3];
+      if(fourNumbersProduct > biggestProduct) {
+        biggestProduct = fourNumbersProduct;
+      }
+    }
+  }
+  // Y line
+  let y = 0;
+  for(let k = 0; k < matrix.length - 3; k++) {
+    for(let l = 0; l < matrix[k].length - 3; l++) {
+      y = matrix[k][l] * matrix[k+1][l] * matrix[k+2][l] * matrix[k+3][l];
+      if(y > biggestProduct) {
+        biggestProduct = y;
+      }
+    }
+  }
+  return biggestProduct;
+}
+
+console.log(greatestProduct(matrix));