Given an integer N, print an inverted isosceles triangle of stars such that the height of the triangle is N.

Example 1:
Input:
N = 4
Output:

*
Example 2:
Input:
N = 3
Output:

*

Your Task:
You don't need to read input or print anything. Your task is to complete the function invIsoTriangle() which takes an Integer N as input and returns a vector of strings where each line represents lines of the pattern. For example, if N=2, the vector v = {"***", " * "}.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

Constraints:
1 <= N <= 100

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