array-operations

This npm package provides a collection of useful array operation functions. It is lightweight because we are not using any outside dependencies.

Installation

npm install array-function-operations

operations

Main array functions are :

1. sum(arr){

   • array must be non empty }

2. average(arr){

   • array must be non empty }

3. countOccurrences(arr, sortOrder){

   • arr = ['apple','mango','apple']
   • output = { mango: 1, apple: 2 } }

4. bulkUpdateArrayElements(arr, elementToUpdate, newElement) {

   • arr = ['apple','mango','apple'] , elementToUpdate = 'apple' , newElement = 'apples'
   • output = ['apples','mango','apples'] }

5. sortElements(arr, sortOrder) {

   • arr = ['apple','mango','apple'] , sortOrder = 'desc'
   • output = ['mango','apples','apples'] }

6. isArrayNumbered(arr){

   • arr = ['apple','mango',4]
   • output = false
   • arr = [1,2,3]
   • output = true }

7. isArrayString(arr){

   • arr = ['apple','mango',4]
   • output = false
   • arr = ['1','2','3']
   • output = true }

8. groupByAndCountObjects(arr,groupBy,sortOrder){

   • arr = [{name:"apple",useedBy:"people"},{name:"apple",usedBy:"animals"},{name:"orrange",usedBy:"people"}] , groupBy=name,sortOrder='desc'
   • output = [{name:"apple",count:2},{name:"orrange",count:1}] }