In this article we will learn how to shuffle an array in JavaScript.
It is very common to shuffle an array in JavaScript in JavaScript.
Problem
Now we have a problem, which is that we want to shuffle an array.
Imagine you have a array like this:
[1, 2, 3, 4, 5];
And we want to shuffle an array to became output like this:
// Shuffle more than once
[2, 1, 5, 4, 3];
[1, 1, 4, 3, 5];
[4, 5, 3, 1, 2];
How to solve this problem
To solve this problem we will use Fisher-Yates shuffle algorithm.
Solution:
As we said before, we can solve this problem using Fisher-Yates shuffle algorithm.
Let's see an example
let array = [1, 2, 3, 4, 5];
for (let i = array.length - 1; i >= 1; i--) {
let j = Math.floor(Math.random() * (i + 1));
let temp = array[j];
array[j] = array[i];
array[i] = temp;
}
console.log(array);
Output
[ 3, 5, 2, 4, 1 ]
Thank you for reading
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