---
title: shuffle
tags: list,random,intermediate
---

Randomizes the order of the values of an list, returning a new list.

Uses the [Fisher-Yates algorithm](https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle) to reorder the elements of the list.

```py
from copy import deepcopy
from random import randint

def shuffle(lst):
  temp_lst = deepcopy(lst)
  m = len(temp_lst)
  while (m):
    m -= 1
    i = randint(0, m)
    temp_lst[m], temp_lst[i] = temp_lst[i], temp_lst[m]
  return temp_lst
```

```py
foo = [1,2,3]
shuffle(foo) # [2,3,1] , foo = [1,2,3]
```
