Assessment.

problems/countNumbers.js

@@ -12,8 +12,16 @@
  * returns { 99: 2, 11: 1, 12: 1, 13: 1, 58: 1 }
  */
 
-function countNumbers() {
-
+function countNumbers(arr) {
+    let count = {}
+    for(let i = 0; i < arr.length; i++){
+        if (count[arr[i]]){
+            count[arr[i]] += 1
+        } else {
+            count[arr[i]] = 1
+        }
+    }
+    return count 
 }
 
 

problems/getCountriesSortedByPopulation.js

@@ -10,7 +10,13 @@
 * 
 */
 
-function getCountriesSortedByPopulation() {
+function getCountriesSortedByPopulation(arr) {
+    return arr.sort((country1, country2) => {
+        return country2.population - country1.population
+    }).map((object) => {
+        return object.country
+    })
+
 
 }
 

problems/isOdd.js

@@ -9,8 +9,11 @@
 * ex: isOdd(75); // true
 */
 
-function isOdd() {
-
+function isOdd(n) {
+    if (n % 2 !== 0){
+        return true
+    } else
+        return false
 }
 
 module.exports = isOdd

problems/numberOfDigits.js

@@ -7,8 +7,9 @@
 
 */
 
-function numberOfDigits() {
-
+function numberOfDigits(n) {
+    let totalDigits = n + ""
+    return totalDigits.length
 }
 
 module.exports = numberOfDigits

problems/removeEvenStrings.js

@@ -19,7 +19,8 @@
 * returns: []
 */
 
-function removeEvenStrings() {
+function removeEvenStrings(arr) {
+    return arr.filter((elem) => {return elem.length % 2 === 1})
 
 }
 

problems/removeNumbersAtOddIndices.js

@@ -10,8 +10,13 @@
 * ex: removeNumbersAtOddIndices([5, 4, 3, 2, 1]);
 * returns: [5, 3, 1]
 */
-function removeNumbersAtOddIndices() {
-
+function removeNumbersAtOddIndices(arr) {
+    let newArray = []
+    for (let i = 0; i < arr.length; i++)
+        if (i % 2 === 0){
+            newArray.push(arr[i])
+        }
+    return newArray
 }
 
 module.exports = removeNumbersAtOddIndices

problems/removeOddNumbers.js

@@ -14,7 +14,9 @@
 * ex: removeOddNumbers([2, 4, 6])
 * returns: [2, 4, 6]
 */
-function removeOddNumbers() {
+function removeOddNumbers(arr) {
+    let noOddnumbers = arr.filter((elem) => { return elem % 2 === 0});
+    return noOddnumbers
 
 }
 

problems/removeVowels.js

@@ -14,7 +14,15 @@
 *
 */
 
-function removeVowels() {
+function removeVowels(str) {
+    let newStr = ""
+    let vowArr = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
+    for (let i = 0; i <str.length; i++) {
+        if (!vowArr.includes(str[i])){
+            newStr += str[i]
+        }
+    }
+    return newStr
 
 }
 

problems/sevenBoom.js

@@ -11,7 +11,16 @@
 * 17 is also replaced with 'BOOM' because it contains a 7.
 */
 
-function sevenBoom() {
+function sevenBoom(n) {
+    let array = []
+    for (let i = 1; i <= n; i++){
+        if (i % 7 === 0 || (i + "").includes(7)){
+            array.push("BOOM")
+        } else {
+            array.push(i)
+        }
+    }
+    return array
 
 }
 

problems/smallest.js

@@ -14,7 +14,13 @@
 * returns 1 (does not matter if it is the first or second 1)
 */
 
-function smallest() {
+function smallest(arr) {
+    let small = arr[0]
+    for (let i = 0; i < arr.length; i++)
+    if (arr[i] < small){
+        small = arr[i]
+    }
+    return small
 
 }