# 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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**Python Code Editor :**

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**Previous:** Write a Python program to check the sum of three elements (each from an array) from three arrays is equal to a target value. Print all those three-element combinations.

**Next:** Write a Python program to get all possible two digit letter combinations from a digit (1 to 9) string.

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## Python: Tips of the Day

**Python: The Zip() Function**

>>> students = ('John', 'Mary', 'Mike') >>> ages = (15, 17, 16) >>> scores = (90, 88, 82, 17, 14) >>> for student, age, score in zip(students, ages, scores): ... print(f'{student}, age: {age}, score: {score}') ... John, age: 15, score: 90 Mary, age: 17, score: 88 Mike, age: 16, score: 82 >>> zipped = zip(students, ages, scores) >>> a, b, c = zip(*zipped) >>> print(b) (15, 17, 16)

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