Benchmark: localeCompare vs function on array sort

Script Preparation code:

var arr = [];
var count = 10000;

var names = [ 'Liam',   'Noah',   'Oliver',   'Elijah',   'James',   'William',   'Benjamin',   'Lucas',   'Henry',
  'Theodore',   'Jack',   'Levi',   'Alexander',  'Jackson',
  'Mateo',  'Daniel',  'Michael',  'Mason',  'Sebastian',  'Ethan',  'Logan',  'Owen',  'Samuel',  'Jacob',  'Asher',  'Aiden',
  'John',  'Joseph',  'Wyatt',  'David',  'Leo',  'Luke',  'Julian',  'Hudson',  'Grayson',  'Matthew',  'Ezra',  'Gabriel',  'Carter',  'Isaac',
  'Jayden',  'Luca',  'Anthony',  'Dylan',  'Lincoln',  'Thomas',  'Maverick',  'Elias',  'Josiah',  'Charles',  'Caleb',  'Christopher',
  'Ezekiel',  'Miles',  'Jaxon',  'Isaiah',  'Andrew',  'Joshua',  'Nathan',  'Nolan',  'Adrian',  'Cameron',  'Santiago',  'Eli',  'Aaron',  'Ryan',  'Angel',  'Cooper',
  'Waylon',  'Easton',  'Kai',  'Christian',  'Landon',  'Colton',  'Roman',  'Axel',  'Brooks',  'Jonathan',  'Robert',  'Jameson',  'Ian',  'Everett',  'Greyson',  'Wesley',
  'Jeremiah',  'Hunter',  'Leonardo',  'Jordan',  'Jose',  'Bennett',  'Silas',  'Nicholas',  'Parker',  'Beau',  'Weston',  'Austin',  'Connor',  'Carson',  'Dominic',  'Xavier',
  'Jaxson',  'Jace',  'Emmett',  'Adam',  'Declan',  'Rowan',  'Micah',  'Kayden',  'Gael',  'River',  'Ryder',  'Kingston',  'Damian',  'Sawyer',  'Luka',  'Evan',
  'Vincent',  'Legend',  'Myles',  'Harrison',  'August',  'Bryson',  'Amir',  'Giovanni',  'Chase',  'Diego',  'Milo',  'Jasper',  'Walker',  'Jason',  'Brayden',  'Cole',
  'Nathaniel',  'George',  'Lorenzo',  'Zion',  'Luis',  'Archer',  'Enzo',  'Jonah',  'Thiago',  'Theo',  'Ayden',  'Zachary',  'Calvin',  'Braxton',  'Ashton',  'Rhett',
  'Atlas',  'Jude',  'Bentley',  'Carlos',  'Ryker',  'Adriel',  'Arthur',  'Ace',  'Tyler',  'Jayce',  'Max',  'Elliot',  'Graham',  'Kaiden',  'Maxwell',  'Juan',
  'Dean',  'Matteo',  'Malachi',  'Ivan',  'Elliott',  'Jesus',  'Emiliano',  'Messiah',  'Gavin',  'Maddox',  'Camden',  'Hayden',  'Leon',  'Antonio',  'Justin',
  'Tucker',  'Brandon',  'Kevin',  'Judah',  'Finn',  'King',  'Brody',  'Xander',  'Nicolas',  'Charlie',  'Arlo',  'Emmanuel',  'Barrett',  'Felix',  'Alex',  'Miguel',
  'Abel',  'Alan',  'Beckett',  'Amari',  'Karter',  'Timothy',  'Abraham',  'Jesse',  'Zayden',  'Blake',  'Alejandro',  'Dawson',  'Tristan',  'Victor',  'Avery',  'Joel',  'Grant',  'Eric',  'Patrick',  'Peter',  'Richard',  'Edward',  'Andres',  'Emilio',
  'Colt',  'Knox',  'Beckham',  'Adonis',  'Kyrie',  'Matias',  'Oscar',  'Lukas',  'Marcus',  'Hayes',  'Caden',  'Remington',  'Griffin',  'Nash',  'Israel',  'Steven',  'Holden',  'Rafael',  'Zane',  'Jeremy',  'Kash',  'Preston',  'Kyler',  'Jax',
  'Jett',  'Kaleb',  'Riley',  'Simon',  'Phoenix',  'Javier',  'Bryce',  'Louis',  'Mark',  'Cash',  'Lennox',  'Paxton',  'Malakai',  'Paul',  'Kenneth',  'Nico',
  'Kaden',  'Lane',  'Kairo',  'Maximus',  'Omar',  'Finley',  'Atticus',  'Crew',  'Brantley',  'Colin',  'Dallas',  'Walter',  'Brady',  'Callum',  'Ronan',  'Hendrix',  'Jorge',  'Tobias',  'Clayton',  'Emerson',  'Damien',  'Zayn',  'Malcolm',  'Kayson',
  'Bodhi',  'Bryan',  'Aidan',  'Cohen',  'Brian',  'Cayden',  'Andre',  'Niko',  'Maximiliano',  'Zander',  'Khalil',  'Rory',  'Francisco',  'Cruz',  'Kobe',  'Reid',  'Daxton',  'Derek',  'Martin',  'Jensen',  'Karson',  'Tate',  'Muhammad',  'Jaden',
  'Joaquin',  'Josue',  'Gideon',  'Dante',  'Cody',  'Bradley',  'Orion',  'Spencer',  'Angelo',  'Erick',  'Jaylen',  'Julius',  'Manuel',  'Ellis',  'Colson',  'Cairo',  'Gunner',  'Wade',  'Chance',  'Odin',  'Anderson',  'Kane',  'Raymond',  'Cristian',
  'Aziel',  'Prince',  'Ezequiel',  'Jake',  'Otto',  'Eduardo',  'Rylan',  'Ali',  'Cade',  'Stephen',  'Ari',  'Kameron',  'Dakota',  'Warren',  'Ricardo',  'Killian',  'Mario',  'Romeo',  'Cyrus',  'Ismael',  'Russell',  'Tyson',  'Edwin',  'Desmond',
  'Nasir',  'Remy',  'Tanner',  'Fernando',  'Hector',  'Titus',  'Lawson',  'Sean',  'Kyle',  'Elian',  'Corbin',  'Bowen',  'Wilder',  'Armani',  'Royal',  'Stetson',  'Briggs',  'Sullivan',  'Leonel',  'Callan',  'Finnegan',  'Jay',
  'Zayne',  'Marshall', 'Kade',  'Travis',  'Sterling',  'Raiden',  'Sergio',  'Tatum',  'Cesar',  'Zyaire',  'Milan',  'Devin',  'Gianni',  'Kamari',  'Royce',  'Malik',  'Jared',  'Franklin',  'Clark',  'Noel',  'Marco',  'Archie',  'Apollo',  'Pablo',
  'Garrett',  'Oakley',  'Memphis',  'Quinn',  'Onyx',  'Alijah',  'Baylor',  'Edgar',  'Nehemiah',  'Winston',  'Major',  'Rhys',  'Forrest',  'Jaiden',  'Reed',   'Santino',  'Troy',  'Caiden',  'Harvey',  'Collin',  'Solomon',  'Donovan',  'Damon',
  'Jeffrey',  'Kason',  'Sage',  'Grady',  'Kendrick',  'Leland',  'Luciano',  'Pedro',  'Hank',  'Hugo',  'Esteban',  'Johnny',  'Kashton',  'Ronin',  'Ford',  'Mathias',
  'Porter',  'Erik',  'Johnathan',  'Frank',  'Tripp',  'Casey',  'Fabian',  'Leonidas',  'Baker',  'Matthias',  'Philip',  'Jayceon',  'Kian',  'Saint',  'Ibrahim',  'Jaxton',
  'Augustus',  'Callen',  'Trevor',  'Ruben',  'Adan',  'Conor',  'Dax',  'Braylen',  'Kaison',  'Francis',  'Kyson',  'Andy',  'Lucca',  'Mack',  'Peyton',  'Alexis',
  'Deacon',  'Kasen',  'Kamden',  'Frederick',  'Princeton',  'Braylon',  'Wells',  'Nikolai',  'Iker',  'Bo',  'Dominick',  'Moshe',  'Cassius',  'Gregory',  'Lewis',  'Kieran',
  'Isaias',  'Seth',  'Marcos',  'Omari',  'Shane',  'Keegan',  'Jase',  'Asa',  'Sonny',  'Uriel',  'Pierce',  'Jasiah',  'Eden',  'Rocco',  'Banks',  'Cannon',
  'Denver',  'Zaiden',  'Roberto',  'Shawn',  'Drew',  'Emanuel',  'Kolton',  'Ayaan',  'Ares',  'Conner',  'Jalen',  'Alonzo',  'Enrique',  'Dalton',  'Moses',  'Koda',
  'Bodie',  'Jamison',  'Phillip',  'Zaire',  'Jonas',  'Kylo',  'Moises',  'Shepherd',  'Allen',  'Kenzo',  'Mohamed',  'Keanu',  'Dexter',  'Conrad',  'Bruce',  'Sylas',
  'Soren',  'Raphael',  'Rowen',  'Gunnar',  'Sutton',  'Quentin',  'Jaziel',  'Emmitt',  'Makai',  'Koa',  'Maximilian',  'Brixton',  'Dariel',  'Zachariah',  'Roy',  'Armando',
  'Corey',  'Saul',  'Izaiah',  'Danny',  'Davis',  'Ridge',  'Yusuf',  'Ariel',  'Valentino',  'Jayson',  'Ronald',  'Albert',  'Gerardo',  'Ryland',  'Dorian',  'Drake',
  'Gage',  'Rodrigo',  'Hezekiah',  'Kylan',  'Boone',  'Ledger',  'Santana',  'Jamari',  'Jamir',  'Lawrence',  'Reece',  'Kaysen',  'Shiloh',  'Arjun',  'Marcelo',  'Abram',
  'Benson',  'Huxley',  'Nikolas',  'Zain',  'Kohen',  'Samson',  'Miller',  'Donald',  'Finnley',  'Kannon',  'Lucian',  'Watson',  'Keith',  'Westin',  'Tadeo',  'Sincere',
  'Boston',  'Axton',  'Amos',  'Chandler',  'Leandro',  'Raul',  'Scott',  'Reign',  'Alessandro',  'Camilo',  'Derrick',  'Morgan',  'Julio',  'Clay',  'Edison',  'Jaime',
  'Augustine',  'Julien',  'Zeke',  'Marvin',  'Bellamy',  'Landen',  'Dustin',  'Jamie',  'Krew',  'Kyree',  'Colter',  'Johan',  'Houston',  'Layton',  'Quincy',  'Case',
  'Atreus',  'Cayson',  'Aarav',  'Darius',  'Harlan',  'Justice',  'Abdiel',  'Layne',  'Raylan',  'Arturo',  'Taylor',  'Anakin',  'Ander',  'Hamza',  'Otis',  'Azariah',
  'Leonard',  'Colby',  'Duke',  'Flynn',  'Trey',  'Gustavo',  'Fletcher',  'Issac',  'Sam',  'Trenton',  'Callahan',  'Chris',  'Mohammad',  'Rayan',  'Lionel',  'Bruno',
  'Jaxxon',  'Zaid',  'Brycen',  'Roland',  'Dillon',  'Lennon',  'Ambrose',  'Rio',  'Mac',  'Ahmed',  'Samir',  'Yosef',  'Tru',  'Creed',  'Tony',  'Alden',  'Aden',  'Alec',  'Carmelo',  'Dario',  'Marcel',  'Roger',  'Ty',  'Ahmad',  'Emir',  'Landyn',  'Skyler',  'Mohammed',
  'Dennis',  'Kareem',  'Nixon',  'Rex',  'Uriah',  'Lee',  'Louie',  'Rayden',  'Reese',  'Alberto',  'Cason',  'Quinton',
  'Kingsley',  'Chaim',  'Alfredo',  'Mauricio',  'Caspian',  'Legacy',  'Ocean',  'Ozzy',  'Briar',  'Wilson',  'Forest',  'Grey',
  'Joziah',  'Salem',  'Neil',  'Remi',  'Bridger',  'Harry',  'Jefferson',  'Lachlan',  'Nelson',  'Casen',  'Salvador',  'Magnus',
  'Tommy',  'Marcellus',  'Maximo',  'Jerry',  'Clyde',  'Aron',  'Keaton',  'Eliam',  'Lian',  'Trace',  'Douglas',  'Junior',
  'Titan',  'Cullen',  'Cillian',  'Musa',  'Mylo',  'Hugh',  'Tomas',  'Vincenzo',  'Westley',  'Langston',  'Byron',  'Kiaan',
  'Loyal',  'Orlando',  'Kyro',  'Amias',  'Amiri',  'Jimmy',  'Vicente',  'Khari',  'Brendan',  'Rey',  'Ben',  'Emery',
  'Zyair',  'Bjorn',  'Evander',  'Ramon',  'Alvin',  'Ricky',  'Jagger',  'Brock',  'Dakari',  'Eddie',  'Blaze',  'Gatlin',
  'Alonso',  'Curtis',  'Kylian',  'Nathanael',  'Devon',  'Wayne',  'Zakai',  'Mathew',  'Rome',  'Riggs',  'Aryan',  'Avi',
  'Hassan',  'Lochlan',  'Stanley',  'Dash',  'Kaiser',  'Benicio',  'Bryant',  'Talon',  'Rohan',  'Wesson',  'Joe',  'Noe',
  'Melvin',  'Vihaan',  'Zayd',  'Darren',  'Enoch',  'Mitchell',  'Jedidiah',  'Brodie',  'Castiel',  'Ira',  'Lance',  'Guillermo',
  'Thatcher',  'Ermias',  'Misael',  'Jakari',  'Emory',  'Mccoy',  'Rudy',  'Thaddeus',  'Valentin',  'Yehuda',  'Bode',  'Madden',
  'Kase',  'Bear',  'Boden',  'Jiraiya',  'Maurice',  'Alvaro',  'Ameer',  'Demetrius',  'Eliseo',  'Kabir',  'Kellan',  'Allan',
  'Azrael',  'Calum',  'Niklaus',  'Ray',  'Damari',  'Elio',  'Jon',  'Leighton',  'Axl',  'Dane',  'Eithan',  'Eugene',
  'Kenji',  'Jakob',  'Colten',  'Eliel',  'Nova',  'Santos',  'Zahir',  'Idris',  'Ishaan',  'Kole',  'Korbin',  'Seven',
  'Alaric',  'Kellen',  'Bronson',  'Franco',  'Wes',  'Larry',  'Mekhi',  'Jamal',  'Dilan',  'Elisha',  'Brennan',  'Kace',
  'Van',  'Felipe',  'Fisher',  'Cal',  'Dior',  'Judson',  'Alfonso',  'Deandre',  'Rocky',  'Henrik',  'Reuben',  'Anders',
  'Arian',  'Damir',  'Jacoby',  'Khalid',  'Kye',  'Mustafa',  'Jadiel',  'Stefan',  'Yousef',  'Aydin',  'Jericho',  'Robin',
  'Wallace',  'Alistair',  'Davion',  'Alfred',  'Ernesto',  'Kyng',  'Everest',  'Gary',  'Leroy',  'Yahir',  'Braden',  'Kelvin',
  'Kristian',  'Adler',  'Avyaan',  'Brayan',  'Jones',  'Truett',  'Aries',  'Joey',  'Randy',  'Jaxx',  'Jesiah',  'Jovanni',
  'Azriel',  'Brecken',  'Harley',  'Zechariah',  'Gordon',  'Jakai',  'Carl',  'Graysen',  'Kylen',  'Ayan',  'Branson',  'Crosby',
  'Dominik',  'Jabari',  'Jaxtyn',  'Kristopher',  'Ulises',  'Zyon',  'Fox',  'Howard',  'Salvatore',  'Turner',  'Vance',  'Harlem',
  'Jair',  'Jakobe',  'Jeremias',  'Osiris',  'Azael',  'Bowie',  'Canaan',  'Elon',  'Granger',  'Karsyn',  'Zavier',
  'Cain',  'Dangelo',  'Heath',  'Yisroel',  'Gian',  'Shepard',  'Harold',  'Kamdyn',  'Rene',  'Rodney',  'Yaakov',  'Adrien',
  'Kartier',  'Cassian',  'Coleson',  'Ahmir',  'Darian',  'Genesis',  'Kalel',  'Agustin',  'Wylder',  'Yadiel',  'Ephraim',  'Kody',
  'Neo',  'Ignacio',  'Osman',  'Aldo',  'Abdullah',  'Cory',  'Blaine',  'Dimitri',  'Khai',  'Landry',  'Palmer',  'Benedict',
  'Leif',  'Koen',  'Maxton',  'Mordechai',  'Zev',  'Atharv',  'Bishop',  'Blaise',  'Davian'              ];
var arrayIndex = 0;
for(var i = 0; i<count; i++)
{
  arr.push({ 
  	id: i,
    name: names[arrayIndex++] + ' ' + i
  });
  if (arrayIndex > names.length) {
    arrayIndex = 0;
  }
}

Tests:

localeCompare
arr.sort((a, b) => a.name.localeCompare(b.name))
Sort
arr.sort((a, b) => a.name > b.name ? 1 : -1)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
localeCompare
Sort

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

A JavaScript benchmarking problem!

After analyzing the code and the test cases, I'll attempt to provide an answer.

**The Problem**

We have two test cases:

1. `arr.sort((a, b) => a.name.localeCompare(b.name))`: This test case checks if the sorting function uses locale comparison.
2. `arr.sort((a, b) => a.name > b.name ? 1 : -1)`: This test case checks if the sorting function uses a custom comparator that doesn't consider locale.

**The Code**

We have an array of names (`names`) and an initial array with some duplicates (`arr`). We're trying to sort `arr` using two different methods.

```javascript
var arr = [...]; // initial array with duplicates
var names = [...]; // array of names

for (var i = 0; i < count; i++) {
    arr.push({
        tid: i,
        name: names[arrayIndex++] + ' ' + i
    });
    if (arrayIndex > names.length) {
        arrayIndex = 0;
    }
}
```

**The Goal**

We need to write a function that takes the `arr` array as an input and returns the sorted array using both sorting methods.

Here's the answer:

```javascript
function sortArray(arr) {
    const sortedArrLocaleCompare = arr.sort((a, b) => a.name.localeCompare(b.name));
    const sortedArrCustomComparator = arr.sort((a, b) => (a.name > b.name ? 1 : -1));

return [sortedArrLocaleCompare, sortedArrCustomComparator];
}

// Test cases
console.log(sortArray([...]));
```

**Explanation**

We define a function `sortArray` that takes the input array `arr`. We then sort `arr` using both methods and return an array with the results.

In the first test case, we use the locale comparison method (`a.name.localeCompare(b.name)`), which should sort the names in a way that respects the user's locale settings.

In the second test case, we use a custom comparator that doesn't consider locale (`(a.name > b.name ? 1 : -1)`). This comparator should return `true` if the first name comes after the second name alphabetically (ignoring locale).

By returning both sorted arrays, we provide an answer to both test cases.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Linux

View result in a separate tab

Test name	Executions per second
localeCompare	2173.4 Ops/sec
Sort	2784.0 Ops/sec

Related benchmarks:

localeCompare vs function on array sort (version: 0)

Test if the

Comparing performance of: localeCompare vs Sort

Created: 2 years ago by: Registered User

Jump to the latest result

localeCompare

Sort

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):