Answers for "javascript how to sort an array"

14

sorting array from highest to lowest javascript

// Sort an array of numbers 
let numbers = [5, 13, 1, 44, 32, 15, 500]

// Lowest to highest
let lowestToHighest = numbers.sort((a, b) => a - b);
//Output: [1,5,13,15,32,44,500]

//Highest to lowest
let highestToLowest = numbers.sort((a, b) => b-a);
//Output: [500,44,32,15,13,5,1]
Posted by: Guest on March-25-2020
1

array sort js

arr = ['width', 'score', done', 'neither' ]
arr.sort() // results to ["done", "neither", "score", "width"]

arr.sort((a,b) => a.localeCompare(b)) 
// if a-b (based on their unicode values) produces a negative value, 
// a comes before b, the reverse if positive, and as is if zero

//When you sort an array with .sort(), it assumes that you are sorting strings
//. When sorting numbers, the default behavior will not sort them properly.
arr = [21, 7, 5.6, 102, 79]
arr.sort((a, b) => a - b) // results to [5.6, 7, 21, 79, 102]
// b - a will give you the reverse order of the sorted items 

//this explnation in not mine
Posted by: Guest on October-07-2020
2

javascript sort function

var points = [40, 100, 1, 5, 25, 10];
points.sort((a,b) => a-b)
Posted by: Guest on May-08-2020
-1

how to sort an array in javascript

you can sort array in different ways:

first....by using the sort method
ex: let arr = ["a", "d", "b", "c", "f"]
let res = arr.sort()
NOTE: this method is not ideal


second...... by using the sort function
ex: let arr = [1, 10, 11, 30, 100, 50, 45]

let res = arr.sort((a, b)=> a - b ).....this sorts in ascending order
let res = arr.sort((a, b)=> b - a ) ...this sorts in descending order

NOTE: we can also user different algorithms to sort an array. example: bubble sort,
  quick sort, merge sort etc.
  
 answer by EZIOGOR CLEVER
Posted by: Guest on August-07-2021
-2

sorting array

def merge_sort(array, left_index, right_index):
    if left_index >= right_index:
        return

    middle = (left_index + right_index)//2
    merge_sort(array, left_index, middle)
    merge_sort(array, middle + 1, right_index)
    merge(array, left_index, right_index, middle)
Posted by: Guest on August-20-2021
-1

sort javascript

arr.sort()
arr.sort(fonctionComparaison)
Posted by: Guest on April-14-2021

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