module 1 final assessment

problems/countNumbers.js

@@ -12,9 +12,22 @@
  * returns { 99: 2, 11: 1, 12: 1, 13: 1, 58: 1 }
  */
 
-function countNumbers() {
+function countNumbers(arr) {
+ let myObject ={}
+ for(let i=0; i < arr.length; i++) {
+    if(arr[i] === ' ') {
+        continue
+    }
+    if (myObject[arr[i]]=== undefined) {
+        myObject[arr[i]] = 1
+    } else {
+        myObject[arr[i]] +=1
+    }
+}
+return myObject
 
 }
 
 
+
 module.exports = countNumbers

problems/getCountriesSortedByPopulation.js

@@ -10,8 +10,20 @@
 * 
 */
 
-function getCountriesSortedByPopulation() {
+function getCountriesSortedByPopulation(arr) {
+arr.sort(function (a,b) {
+    return a.population - b.population
+    let myObject = Object.population(arr)
 
+}) return myObject
+
+// let newArray= arr.sort((p1, p2) => {
+//   return  p2.population - p1.population
+//   console.log(newArray)
+// })
+// console.log(newArray)
+// // return newArray
 }
 
+
 module.exports = getCountriesSortedByPopulation

problems/isOdd.js

@@ -9,8 +9,12 @@
 * 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 +7,17 @@
 
 */
 
-function numberOfDigits() {
+function numberOfDigits(n) {
+let str = n.toString()
 
+// let numbertoletter = n
+// let str = numbertoletter.toString()
+// let newStr = str.split('')
+// for(let i = 0; i < newStr.length; i++){
+//     let newDigit = i
+// }
+// return newDigit
+return str.length
 }
 
 module.exports = numberOfDigits

problems/removeEvenStrings.js

@@ -19,8 +19,14 @@
 * returns: []
 */
 
-function removeEvenStrings() {
+function removeEvenStrings(arr) {
+let array = arr.filter((elem)=>{
+    if (elem.length % 2 !== 0){
+        return true
+    }
 
+})
+return array
 }
 
 module.exports = removeEvenStrings

problems/removeNumbersAtOddIndices.js

@@ -10,8 +10,12 @@
 * ex: removeNumbersAtOddIndices([5, 4, 3, 2, 1]);
 * returns: [5, 3, 1]
 */
-function removeNumbersAtOddIndices() {
-
+function removeNumbersAtOddIndices(arr) {
+let oddNum = []
+for(let i = 0; i < arr.length; i+=2) {
+    oddNum.push(arr[i])
+}
+return oddNum
 }
 
 module.exports = removeNumbersAtOddIndices

problems/removeOddNumbers.js

@@ -14,8 +14,14 @@
 * ex: removeOddNumbers([2, 4, 6])
 * returns: [2, 4, 6]
 */
-function removeOddNumbers() {
+function removeOddNumbers(arr) {
+    let array = arr.filter((elem) => {
+        if(elem % 2 === 0) {
+          return true
+        }
+       })
+       return array
+     };
 
-}
 
 module.exports = removeOddNumbers

problems/removeVowels.js

@@ -14,8 +14,12 @@
 *
 */
 
-function removeVowels() {
-
+function removeVowels(str) {
+let strToArray = str.split('')
+let noLetterE = strToArray.split('e')
+let noLetterA = noLetterE.split('a')
+let newLetter = noLetterA
+return newLetter
 }
 
 module.exports = removeVowels

problems/sevenBoom.js

@@ -11,8 +11,18 @@
 * 17 is also replaced with 'BOOM' because it contains a 7.
 */
 
-function sevenBoom() {
-
+function sevenBoom(n) {
+let newArr = []
+for (let i = n; i >= 1; i -= 1) {
+    newArr.push(i)
+}
+let array = newArr.map((el) => {
+    if (array[el] % 7 === 0) {
+        array[el] = 'Boom'
+    }
+    return array
+})
+let finalArray =
 }
 
 module.exports = sevenBoom

problems/smallest.js

@@ -14,8 +14,27 @@
 * returns 1 (does not matter if it is the first or second 1)
 */
 
-function smallest() {
-
+function smallest(arr) {
+let l = Infinity //store largest
+let l2 = Infinity //store second largest
+for (let i = 0 ; i < arr.length; i ++) {
+    if (arr[i] < l) { //if 5 is greater than - infinity
+        l = arr[i]  // l becomes 5
+        l2 = l
+    } else if (arr[i] < l2) {
+        l2 = arr[i]
+    }
+}
+return l2
 }
 
 module.exports = smallest
+
+
+// let small = arr.reduce((acc,currentEl) =>{
+//     if(acc < currentEl) {
+//         return acc
+//     } else {
+//         return currentEl
+//     }
+// })