# JavaScript: Randomize the order of the values of an array, returning a new array

## JavaScript fundamental (ES6 Syntax): Exercise-145 with Solution

Write a JavaScript program to randomize the order of array values, returning an updated array.

• Use the Fisher-Yates algorithm to reorder the elements of the array.

Sample Solution:

JavaScript Code:

``````//#Source https://bit.ly/2neWfJ2

// Define the shuffle function
const shuffle = ([...arr]) => {
let m = arr.length;
// Iterate over the array elements
while (m) {
// Pick a random index
const i = Math.floor(Math.random() * m--);
// Swap the current element with a random element
[arr[m], arr[i]] = [arr[i], arr[m]];
}
// Return the shuffled array
return arr;
};

// Test the shuffle function with an array
const foo = [1, 2, 3];
console.log(shuffle(foo)); // Output: A shuffled version of the input array
```
```

Output:

```[2,1,3]
```

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-145-1 by w3resource (@w3resource) on CodePen.

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