[PTMAD052022] Marek Laz

src/functions-and-arrays.js

@@ -1,41 +1,93 @@
 // Iteration #1: Find the maximum
-function maxOfTwoNumbers() {}
-
-
+function maxOfTwoNumbers(num1, num2) {
+  return Math.max(num1, num2);
+}
 
 // Iteration #2: Find longest word
 const words = ['mystery', 'brother', 'aviator', 'crocodile', 'pearl', 'orchard', 'crackpot'];
 
-function findLongestWord() {}
-
-
+function findLongestWord(wordsLong) {
+  if(wordsLong.length === 0) {
+    return null;
+  } else {
+    let firstOccurrence = ''
+    wordsLong.forEach(function(element){
+      if(element.length > firstOccurrence.length)
+        firstOccurrence = element
+    })
+    return firstOccurrence
+  }
+}
 
 // Iteration #3: Calculate the sum
 const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
 
-function sumNumbers() {}
-
-
+function sumNumbers(numbersArr) {
+    let sumArr = 0
+    numbersArr.forEach(function(element) {
+      sumArr += element
+    })
+    return sumArr
+}
 
 // Iteration #3.1 Bonus:
-function sum() {}
-
-
+const mixedArr = [6, 12, 'miami', 1, true, 'barca', '200', 'lisboa', 8, 10];
+
+function sum(randomArray) {
+
+  if(randomArray.length === 0) {
+    return 0
+  }
+  let total = 0
+    randomArray.forEach(function(element){
+      if(element === 0) {
+        return 0
+      } else if (typeof element === 'number') {
+        total += element
+      } else if (typeof element === 'string') {
+        total += element.length
+      } else if (element === true) {
+        total++
+      } else if(element === true || typeof element === 'object') {
+        throw "Unsupported data type sir or ma'am"
+      }
+    })
+    return total
+}
 
 // Iteration #4: Calculate the average
-// Level 1: Array of numbers
-const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];
-
-function averageNumbers() {}
 
+// Level 1: Array of numbers
+const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9]
+
+function averageNumbers(numbersTest) {
+  if (numbersTest.length === 0) {
+    return null
+  }	else {
+    return sumNumbers(numbersTest) / numbersTest.length
+  }
+}
 
 // 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 === 0) {
+    return null
+  } else {
+    return sum(stringArray) / stringArray.length
+  }
+}
 
 // Bonus - Iteration #4.1
-function avg() {}
+
+function avg(avgArr) {
+  if(avgArr.length === 0) {
+    return null
+  } else {
+    return Number((sum(avgArr) / avgArr.length).toFixed(2))
+  }
+}
 
 // Iteration #5: Unique arrays
 const wordsUnique = [
@@ -52,14 +104,39 @@ const wordsUnique = [
   'bring'
 ];
 
-function uniquifyArray() {}
-
-
+function uniquifyArray(uniqueArray, word) {
+  let newUniqueArr = []
+  if(uniqueArray.length === 0) {
+    return null
+  } else {
+    uniqueArray.forEach(function(element){
+      console.log(element)
+      if (newUniqueArr.indexOf(element) === -1) {
+        newUniqueArr.push(element)
+     }
+    })
+  }
+  return newUniqueArr
+}
 
 // Iteration #6: Find elements
 const wordsFind = ['machine', 'subset', 'trouble', 'starting', 'matter', 'eating', 'truth', 'disobedience'];
 
-function doesWordExist() {}
+function doesWordExist(wordsArr, word) {
+  if(wordsArr.length === 0) {
+    return null
+  }
+  let isOnArray
+
+  wordsArr.forEach(function (element) {
+    if (element === word) {
+      isOnArray  = true
+    } else if (element ) {
+      isOnArray = false
+    }
+  })
+  return isOnArray
+}
 
 
 
@@ -78,7 +155,15 @@ const wordsCount = [
   'matter'
 ];
 
-function howManyTimes() {}
+function howManyTimes(wordsCount, word) {
+  let counter = 0
+  wordsCount.forEach(function (element) {
+    if (element === word) {
+    	counter += 1;
+    }
+  })
+  return counter
+}