Update functions-and-arrays.js

src/functions-and-arrays.js

@@ -1,41 +1,93 @@
 // Iteration #1: Find the maximum
-function maxOfTwoNumbers() {}
+function maxOfTwoNumbers(num1, num2) {
+
+  if (num1 > num2) {
+    return num1;
+
+  } else {
+    return num2;
+
+  }
+}
 
 
 
 // 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];
+  } else
+    return words.sort((one, two) => two.length - one.length)[0];
+
+}
 
 
 
 // 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;
+  }
+  else {
+    let sum = 0;
+    for (let zahl of numbers) {
+      sum += zahl;
+    }
+    return sum;
+
+
+  }
+
+}
 
 
 
 // Iteration #3.1 Bonus:
-function sum() {}
+function sum() { }
 
 
 
 // Iteration #4: Calculate the average
 // Level 1: Array of numbers
 const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];
 
-function averageNumbers() {}
+function averageNumbers(numbers) {
+  if (numbers.length) {
+    return sumNumbers(numbers) / numbers.length;
+  } else {
+    return null;
+  }
+}
+
+
+
 
 
 // Level 2: Array of strings
 const wordsArr = ['seat', 'correspond', 'linen', 'motif', 'hole', 'smell', 'smart', 'chaos', 'fuel', 'palace'];
 
-function averageWordLength() { }
+function averageWordLength(stringArray) {
+  if (stringArray.length) {
+    sum = 0;
+    for (let string of stringArray) {
+      sum += string.length;
+    }
+    return parseInt(sum / stringArray.length);
+  } else {
+    return null;
+  }
+}
+
 
 // Bonus - Iteration #4.1
-function avg() {}
+function avg() { }
 
 // Iteration #5: Unique arrays
 const wordsUnique = [
@@ -52,14 +104,28 @@ const wordsUnique = [
   'bring'
 ];
 
-function uniquifyArray() {}
+function uniquifyArray(array) {
+  if (array.length) {
+    let pushArray = [];
+    for (let word of array) {
+      if (!pushArray.includes(word)) {
+        pushArray.push(word);
+      }
+    } return pushArray;
+  } else {
+    return null;
+  }
+}
+
 
 
 
 // Iteration #6: Find elements
 const wordsFind = ['machine', 'subset', 'trouble', 'starting', 'matter', 'eating', 'truth', 'disobedience'];
 
-function doesWordExist() {}
+function doesWordExist(wordsFind, search) {
+  return (wordsFind.length) ? wordsFind.includes(search) : null;
+}
 
 
 
@@ -78,7 +144,23 @@ const wordsCount = [
   'matter'
 ];
 
-function howManyTimes() {}
+function howManyTimes(wordsCount, search) {
+  if (wordsCount.length) {
+    let counter = 0;
+    for (let word of wordsCount) {
+      if (word === search) {
+        console.log(word);
+        counter++;
+      } else {
+        continue;
+      }
+    }
+    return counter;
+  } else {
+    return 0;
+  }
+}
+
 
 
 
@@ -106,7 +188,7 @@ 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() { }