04-Concatenation of Array.py

'''
Example 1:

Input: nums = [1,2,1]
Output: [1,2,1,1,2,1]
Explanation: The array ans is formed as follows:
- ans = [nums[0],nums[1],nums[2],nums[0],nums[1],nums[2]]
- ans = [1,2,1,1,2,1]

Example 2:

Input: nums = [1,3,2,1]
Output: [1,3,2,1,1,3,2,1]
Explanation: The array ans is formed as follows:
- ans = [nums[0],nums[1],nums[2],nums[3],nums[0],nums[1],nums[2],nums[3]]
- ans = [1,3,2,1,1,3,2,1]
'''

def getConcatenation(self, nums):
    # return nums*2 (or)
    # return nums + nums (or)
    nums.extend(nums)
    return nums

nums = [1,2,1]
print(getConcatenation(nums))

nums = [1,3,2,1]
print(getConcatenation(nums))