Retrieving components of an array

Question

Retrieving components of an array

I am looking to extract elements from an array, then store them in a new array and compare them to another array. The challenge is that I do not want to extract the elements in a specific order. I have tried using the .slice function for extracting elements in a specified order.

let winArray = [playerSymbol, playerSymbol, playerSymbol]
if (playingFielddArray.slice(0, 3).every(v => winArray.includes(v))) {
    // Do something }

While this method works well, it only applies to ordered elements. For non-sequential elements, my approach involves creating multiple arrays for comparison.

let newArray = [playingFielddArray[0], playingFielddArray[4], playingFielddArray[8]]
if(newArray.every(v => winArray.includes(v))){ // Do something }

However, I find this solution cumbersome as it requires creating numerous arrays for comparison purposes. Is there a more efficient function or method that I can utilize for this task?

javascript arrays

Answer 1

Answer №1

In a game of tic-tac-toe, to determine if there is a winner, you can create a function that loops three times and checks certain positions:

[i*3, i*3+1, i*3+2] // for checking horizontal rows
[i, i+3, i+6] // for checking vertical columns
[i,i+4,i+8] // for diagonal check when i=0
[i, i+2, i+4] // for diagonal check when i=2

If these positions contain the same icons, names, or ids, then there is a match.

Answer 2

In a game of tic-tac-toe, to determine if there is a winner, you can create a function that loops three times and checks certain positions:

[i*3, i*3+1, i*3+2] // for checking horizontal rows
[i, i+3, i+6] // for checking vertical columns
[i,i+4,i+8] // for diagonal check when i=0
[i, i+2, i+4] // for diagonal check when i=2

If these positions contain the same icons, names, or ids, then there is a match.

Retrieving components of an array

Answer №1

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