how to manually sort array javascript

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obi1baloney answered on June 25, 2020 Popularity 1/10 Helpfulness 1/10

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how to manually sort array javascript

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//This code was written by user Smiling Salmon, full credit goes to them
//(the code is written very neatly and compactly)
//I've added comments to each individual line incase you are a total
//JS noob such as myself, who has no idea how to read this. 
//hopefully you find the following commented lines educational.
var done = false;
   //prevents loop ending before the array is properly sifted through enough times
  function sort (array) {
  while (!done) {
    done = true;
    //this code is set in a way so that the biggest number will always go to the end of the array
    //it does this by checking if the number listed before it in the array is bigger than the current
    //number listed in the array.
    //Therefore, i is set to 1 instead of 0 so that the code is able to check "is the number behind me bigger?"
    for (var i = 1; i < array.length; i += 1) {
      //compares item in list before current item to the current item
      if (array[i - 1] > array[i]) {
        //tells the program to continue looping because there is still a number out of place.
        done = false;
        //tmp is used to temporarily copy the value of the bigger number onto itself
        var tmp = array[i - 1];
        //the bigger number then becomes the current number
        array[i - 1] = array[i];
        //and the current number then becomes the number which was previously before it. (thanks tmp)
        array[i] = tmp;
        //the code will continue to push the bigger numbers to the front until the conditional
        //no longer tells done to equal false, thus ending the looping and sorting the array.
      }
    }
  }
  }
var numbers = [12, 10, 15, 11, 14, 13, 16];
sort(numbers);
console.log(numbers);

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Contributed on Feb 23 2022

obi1baloney

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javascript array sorting algorithm with sort method

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function bubbleSort(array) {
  for (let i = 0; i < array.length; i++) {
    for (let j = 0; j < array.length - 1 - i; j++) {
      if (array[j] > array[j + 1])
        [array[j], array[j + 1]] = [array[j + 1], array[j]]; // Using ES6 array destructuring to swap
    }
  }
  return array;
}

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Source: forum.freecodecamp.org

Tags: algorithm algo

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Contributed on Mar 05 2023

Black Devil

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sort() function example JavaScript

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function ascendingOrder(arr) {
  return arr.sort(function(a, b) {
    return a - b;
  });
}
ascendingOrder([1, 5, 2, 3, 4]);

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Source: www.freecodecamp.org

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Contributed on Apr 24 2021

TechSlugz

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how to sort an array in js

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//ascending order
let ArrayOne = [1,32,5341,10,32,10,90]
ArrayOne = ArrayOne.sort(function(x,y){x-y})
//descending order
let ArrayTwo = [321,51,51,324,111,1000]
ArrayTwo = ArrayTwo.sort(function(x,y){y-x})

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Contributed on Aug 04 2022

Homely Herring

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Sorting in JavaScript

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var l = ["a", "w", "r", "e", "d", "c", "e", "f", "g"];
console.log(l.sort())
/*[ 'a', 'c', 'd', 'e', 'e', 'f', 'g', 'r', 'w' ]*/

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Contributed on Sep 04 2022

Javasper

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define array sort method in javascript

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How does the following code sort this array to be in numerical order?     

    var array=[25, 8, 7, 41]

    array.sort(function(a,b){
      return a - b
    })

I know that if the result of the computation is... 

**Less than 0**: "a" is sorted to be a lower index than "b".<br />
**Zero:** "a" and "b" are considered equal, and no sorting is performed.<br />
**Greater than 0:** "b" is sorted to be a lower index than "a".<br />

Is the array sort callback function called many times during the course of the sort?

If so, I'd like to know which two numbers are passed into the function each time. I assumed it first took "25"(a) and "8"(b), followed by "7"(a) and "41"(b), so:

25(a) - 8(b) = 17 (greater than zero, so sort "b" to be a lower index than "a"): 8, 25

7(a) - 41(b) = -34 (less than zero, so sort "a" to be a lower index than "b": 7, 41

How are the two sets of numbers then sorted in relation to one another?

Please help a struggling newbie!

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Contributed on Oct 10 2022

Abdul Haseeb Siddiqui

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sort function explained javascript

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var sortedArray = myArray.sort(function(a,b){
                                   if (a.name < b.name)
                                      return -1;
                                   else if (a.name == b.name)
                                      return 0;
                                   else
                                      return 1;
                               });

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Contributed on Jun 25 2020

Defiant Dormouse

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How to sort array value using sort() method in JavaScript

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<!DOCTYPE html>
<html>
<body>
<p>sort array value in alphabatical order</p>
<p>Click on button click we can see our short array value</p>
<button onclick="banksNameInAlphabaticalOrder()" id="btnClick">Click</button>
<p id="pId"></p>
<script>
var banksOfIndis = ["CentralBankOfIndia","AndhraBank","BankOfBaroda","CanaraBank","AllhabadBank"];
function banksNameInAlphabaticalOrder() {
banksOfIndis.sort();
document.getElementById("pId").innerHTML = banksOfIndis;
}
</script>
</body>
</html>

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Source: www.enjoysharepoint.com

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Contributed on Sep 08 2022

Lucky Lizard

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javascript sorting an array

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sorting an array

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Source: Grepper

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Contributed on Jan 03 2022

Foolish Fish

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how to manually sort array javascript

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