Swap two pairs of elements in an array in a random order

Question

Swap two pairs of elements in an array in a random order

I have a list of team members and also 2 substitute players: team = Samson, Max, Rowan, Flynn, Jack subs = Struan, Harry

I am facing a challenge in randomly swapping the 2 subs into the team. The difficulty lies in ensuring that only these 2 elements are swapped and that both are included in the swap. Initially, I attempted to loop through the subs array and swap each element randomly with an element from the team array. However, this method often resulted in scenarios where Struan was swapped with Max and then Harry was swapped with Struan, leaving Struan still in the subs array instead of being transferred to the team.

Therefore, my objective is to specifically exchange the 2 elements in the sub array with random elements from the team array. How can I accomplish this?

javascript arrays google-apps-script google-sheets

Answer 1

Answer №1

To achieve this functionality, utilize the following function. Input the current team and substitutes to receive a new team with random substitutions.

const players = ['Aiden', 'Ella', 'Liam', 'Mia', 'Olivia']
const subs = ['Ethan', 'Sophia']

const substitutePlayers = (players, subs) => {
  const newTeam = [...players]
  
  function getRandomInt(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max-1);
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }
  
  let num1 = getRandomInt(0, players.length)
  let num2 = getRandomInt(0, players.length)
  
  while(num2 === num1) num2++
  
  newTeam[num1] = subs[0]
  newTeam[num2] = subs[1]
  
  return newTeam
}

const updatedTeam = substitutePlayers(players, subs);

console.log(updatedTeam)

Answer 2

To achieve this functionality, utilize the following function. Input the current team and substitutes to receive a new team with random substitutions.

const players = ['Aiden', 'Ella', 'Liam', 'Mia', 'Olivia']
const subs = ['Ethan', 'Sophia']

const substitutePlayers = (players, subs) => {
  const newTeam = [...players]
  
  function getRandomInt(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max-1);
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }
  
  let num1 = getRandomInt(0, players.length)
  let num2 = getRandomInt(0, players.length)
  
  while(num2 === num1) num2++
  
  newTeam[num1] = subs[0]
  newTeam[num2] = subs[1]
  
  return newTeam
}

const updatedTeam = substitutePlayers(players, subs);

console.log(updatedTeam)

Answer 3

Answer №2

Here's a possible solution:

function chooseRandomItem () {
   let randomItem = team[Math.floor(Math.random()*team.length)];
   if(subs.indexOf(randomItem) < 0){
      return randomItem;
   } else {
      return chooseRandomItem();
   }
}

subs.forEach((item, index) => {
   subs.splice(index, 1, chooseRandomItem());
}

Answer 4

Here's a possible solution:

function chooseRandomItem () {
   let randomItem = team[Math.floor(Math.random()*team.length)];
   if(subs.indexOf(randomItem) < 0){
      return randomItem;
   } else {
      return chooseRandomItem();
   }
}

subs.forEach((item, index) => {
   subs.splice(index, 1, chooseRandomItem());
}

Swap two pairs of elements in an array in a random order

Answer №1

Answer №2

Similar questions

A comprehensive guide on utilizing the loading.tsx file in Next JS

AJAX does not execute all inline JavaScript code

Needing to utilize the provide() function individually for every service in RC4

What is the best way to retrieve data attributes from multiple div elements that share the same class name?

How to emphasize a portion of an expression in AngularJS using bold formatting

Unable to transfer files, encountering issues with PHP and AngularJS integration

When attempting to utilize nsIPrefBranch in a Firefox extension to save data, an unexpected error of NS_ERROR_UNEXPECTED occurs

Steps to clear the form in vue after the ajax request has been successfully submitted

Using jQuery to Activate Genuine Events

The smooth scroll feature is not functioning properly on the animated mouse-scroll down button

Issue with pop-up functionality on web page using HTML, CSS, and JavaScript

Encountering the issue of "Cannot read properties of undefined" while attempting to pass data to a prop

Transferring data from jQuery Ajax to PHP

The Node.js application encounters a blank response when making a GET request to the API

Use setTimeout and setInterval with the initial input without parentheses or double quotation marks

Trouble with event.preventDefault functionality

Steps for importing jQuery typings into TypeScript:1. First, install the jQuery

What impact does the depth of an array have on performance in PHP?

Techniques for adding values to arrays in JavaScript

Is the NodeJS debugger prone to crashing when utilizing `this` to invoke an unidentified function?