Print a sequence of numbers starting with N where A[0] = N, without using loop, in which A[i+1] = A[i] - 5, until A[i] > 0. After that A[i+1] = A[i] + 5 repeat it until A[i] = N.
Example 1:
Input: N = 16
Output: 16 11 6 1 -4 1 6 11 16
Explaination: The value decreases until it
is greater than 0. After that it increases
and stops when it becomes 16 again.
Example 2:
Input: N = 10
Output: 10 5 0 5 10
Explaination: It follows the same logic as
per the above example.
Your Task:
You do not need to read input or print anything. Your task is to complete the function pattern() which takes N as input parameters and returns a list containing the pattern.
Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)
Constraints:
1 ≤ N ≤ 10^{4}

见题面

见题面