wdi-sg · edmundcjj · Feb 27, 2018
diff --git a/index.html b/index.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <title>js-functions</title>
+</head>
+
+<body>
+  <!-- <script src="js/maxOfThree.js"></script>
+  <script src="js/isCharacterAVowel.js"></script>
+  <script src="js/sumArray.js"></script>
+  <script src="js/reverseString.js"></script>
+  <script src="js/findLongestWord.js"></script>
+  <script src="js/letterCount.js"></script>
+  <script src="js/sillySum.js"></script> -->
+  <script src="js/primes.js"></script>
+  <!-- <script src="js/isPrime.js"></script> -->
+</body>
+
+</html>
diff --git a/js/findLongestWord.js b/js/findLongestWord.js
@@ -0,0 +1,14 @@
+
+function findLongestWord(arr){
+  var largest_length = 0;
+  var longest_word_index;
+  for (var i=0; i<arr.length; i++){
+    if (arr[i].length > largest_length){
+      largest_length = arr[i].length;
+      longest_word_index = i;
+    }
+  }
+  console.log("Longest word in the array = " + arr[longest_word_index]);
+}
+
+findLongestWord(["haha", "shopping", "happy", "knowledge", "enormous", "fabulous"]);
diff --git a/js/isCharacterAVowel.js b/js/isCharacterAVowel.js
@@ -0,0 +1,14 @@
+var vowels_array = ['a', 'e', 'i', 'o', 'u'];
+
+function isCharacterAVowel(num){
+  for (var vowels in vowels_array){
+    if (num === vowels_array[vowels]){
+      return true;
+    }
+    else {
+      return false;
+    }
+  }
+}
+
+console.log(isCharacterAVowel('f'));
diff --git a/js/isPrime.js b/js/isPrime.js
@@ -0,0 +1,20 @@
+
+
+function isPrime(num){
+  if (num < 2){
+    return false;
+  }
+  else if (num === 2){
+    return true;
+  }
+  else{
+    for (var i=2; i<num; i++){
+      if (num % i == 0) {
+        return false;
+      }
+    }
+    return true;
+  }
+}
+
+console.log(isPrime(3));
diff --git a/js/letterCount.js b/js/letterCount.js
@@ -0,0 +1,18 @@
+
+
+function letterCount(word){
+  var letters = {};
+
+  //loop, figure it out
+  for(x = 0, length = word.length; x < length; x++) {
+  	var l = word.charAt(x)
+  	letters[l] = (isNaN(letters[l]) ? 1 : letters[l] + 1);
+  }
+
+  //output count!
+  for(var key in letters) {
+  	console.log(key + ' - ' + letters[key]);
+  }
+}
+
+letterCount("haha");
diff --git a/js/maxofThree.js b/js/maxofThree.js
@@ -0,0 +1,20 @@
+
+
+function maxOfThree(num1, num2, num3){
+  if (num1 > num2){
+    if (num1 > num3){
+      console.log(num1 + " is the largest number of the three");
+    }
+    else{
+      console.log(num3 + " is the largest number of the three");
+    }
+  }
+  else if (num2 > num3){
+    console.log(num2 + " is the largest number of the three");
+  }
+  else{
+    console.log(num3 + " is the largest number of the three");
+  }
+}
+
+maxOfThree(6,7,8);
diff --git a/js/primes.js b/js/primes.js
@@ -0,0 +1,29 @@
+
+function isPrime(num){
+  if (num < 2){
+    return false;
+  }
+  else if (num === 2){
+    return true;
+  }
+  else{
+    for (var i=2; i<num; i++){
+      if (num % i == 0) {
+        return false;
+      }
+    }
+    return true;
+  }
+}
+
+function primes(max){
+  var primes_array = [];
+  for (var i=0; i<max; i++){
+    if (isPrime(i)) {
+      primes_array.push(i);
+    }
+  }
+  return primes_array;
+}
+
+console.log(primes(10));
diff --git a/js/reverseString.js b/js/reverseString.js
@@ -0,0 +1,11 @@
+
+function reverseString(word){
+  var reversedString = "";
+  for (var i = word.length-1; i >= 0; i--) {
+      reversedString = reversedString.concat(word.charAt(i));
+  }
+  return reversedString;
+}
+
+// Display the reversed string
+console.log(reverseString("jag testar"));
diff --git a/js/sillySum.js b/js/sillySum.js
@@ -0,0 +1,9 @@
+function sillySum(arr){
+  var count = 0;
+  for (var numbers in arr){
+    count += (arr[numbers] * numbers);
+  }
+  return count;
+}
+
+console.log(sillySum([1,2,3]));
diff --git a/js/sumArray.js b/js/sumArray.js
@@ -0,0 +1,18 @@
+function sumArray (arr){
+  var sum_total = 0;
+  for (var numbers in arr){
+    sum_total = sum_total + arr[numbers];
+  }
+  return sum_total;
+}
+
+function multiplyArray (arr){
+  var mul_total = 1;
+  for (var numbers in arr){
+    mul_total = mul_total * arr[numbers];
+  }
+  return mul_total;
+}
+
+console.log(sumArray([1,2,3,4]));
+console.log(multiplyArray([1,2,3,4]));