Python: Create all possible permutations from a given collection of distinct numbers

Python Basic - 1: Exercise-12 with Solution

Write a Python program to create all possible permutations from a given collection of distinct numbers.

Pictorial Presentation:

Sample Solution:

Python Code:

def permute(nums):
  result_perms = [[]]
  for n in nums:
    new_perms = []
    for perm in result_perms:
      for i in range(len(perm)+1):
        new_perms.append(perm[:i] + [n] + perm[i:])
        result_perms = new_perms
  return result_perms

my_nums = [1,2,3]
print("Original Cofllection: ",my_nums)
print("Collection of distinct numbers:\n",permute(my_nums))

Sample Output:

Original Cofllection:  [1, 2, 3]
Collection of distinct numbers:
 [[3, 2, 1], [2, 3, 1], [2, 1, 3], [3, 1, 2], [1, 3, 2], [1, 2, 3]]

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