# Shuffle an list in python

``````import random
import sys
#  Python 3 program for
#  Shuffle the list elements
class Shuffling :
#  Function which is swapping two list elements
#  of given location
def swapElement(self, arr, i, j) :
#  Get i location element
temp = arr[i]
#  Set new values
arr[i] = arr[j]
arr[j] = temp

#  Returns the random location of list elements
def randomLocation(self, min, max) :
#  Calculate random number between given range
return random.randint(min,max)

#  Function which is shuffle given list elements
def shuffleElement(self, arr, size) :
#  (i,j) indicate locations
j = 0
i = 0
#  Variable which is controlling the
#  execution process of loop
counter = 0
#  Loop which is shuffling random elements in list
while (counter < size) :
#  Get random location of list index
i = self.randomLocation(0, size-1)
j = self.randomLocation(0, size-1)
if (i != j) :
#  Swap list elements
self.swapElement(arr, i, j)
counter += 1

#  Function which is display list elements
def display(self, arr, size) :
i = 0
while (i < size) :
#  Disply element value
print("", arr[i], end = " ")
i += 1

print(end = "\n")

def main() :
#  Define list of integer elements
arr = [1, 0, -3, 8, 7, 3, 9, 4, 2, 5, 10, 6]
size = len(arr)
#  Before shuffling  list elements
print(" Initial array elements")
print(" After Shuffle array elements")

if __name__ == "__main__": main()``````

Output

`````` Initial array elements
1  0  -3  8  7  3  9  4  2  5  10  6
After Shuffle array elements
9  7  5  6  4  10  -3  0  1  2  3  8
1  7  10  8  6  5  0  2  9  -3  3  4
-3  2  8  10  1  5  9  3  0  4  6  7``````

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