Description
Given the array nums
consisting of 2n
elements in the form [x1,x2,...,xn,y1,y2,...,yn]
.
Return the array in the form [x1,y1,x2,y2,...,xn,yn]
.
Example 1:
Input: nums = [2,5,1,3,4,7], n = 3 Output: [2,3,5,4,1,7] Explanation: Since x1=2, x2=5, x3=1, y1=3, y2=4, y3=7 then the answer is [2,3,5,4,1,7].
Example 2:
Input: nums = [1,2,3,4,4,3,2,1], n = 4 Output: [1,4,2,3,3,2,4,1]
Example 3:
Input: nums = [1,1,2,2], n = 2 Output: [1,2,1,2]
Constraints:
1 <= n <= 500
nums.length == 2n
1 <= nums[i] <= 10^3
Solution
Python3
class Solution:
def shuffle(self, nums: List[int], n: int) -> List[int]:
divider = n*2//2
first_half = nums[:divider]
second_half = nums[divider:]
ans = []
for i in range(divider):
ans.append(first_half[i])
ans.append(second_half[i])
return ans