finished node practice

src/dates/index.js

@@ -1,18 +1,19 @@
 // import moment here; use this package in each function
-
+const moment = require ("moment")
 const today = () => {
   // write code for dates.today
+  return moment().format("dddd")
 
 }
 
 const calendar = () => {
   // write code for dates.calendar
-
+  return moment().format("MMM DD, YYYY")
 }
 
 const currentTime = () => {
   // write code for dates.currentTime
-
+  return moment().format("hh:mm:ss A")
 }
 
 module.exports = {

src/numbers/index.js

@@ -1,18 +1,25 @@
 const isEven = (num) => {
   // write code for numbers.isEven
-
-}
+  if (num % 2 === 0) {
+  }	    return true;
+    }
 
 const sum = (arr) => {
   // write code for numbers.sum
-
+  return arr.reduce((a, b) => a + b, 0);
 }
 
 const comboSum = (arr, sum) => {
   // write code for numbers.comboSum
-
-}
-
+  let arrSum = arr.reduce(function (a, b) {   return a + b
+    }, 0);
+    if (arrSum === sum) {
+      return true
+    } else {
+      return false
+    }
+  }
+
 module.exports = {
   isEven,
   sum,

src/strings/index.js

@@ -1,16 +1,22 @@
 const split = (str, delim) => {
   // write code for strings.split
-
+  return str.split(delim)
 }
 
 const pairs = (str) => {
   // write code for strings.pairs
-
+  let strList = []
+  for(let i= 0; i < str.length-1; i++) {
+    if(i%2 ===0) {
+    strList.push(`${str[i]}${str[i+1]}`)
+  }
+  }
+  return strList
 }
 
 const reverse = (str) => {
   // write code for strings.reverse
-
+  return str.split("").reverse().join("")
 }
 
 module.exports = {