LC 0896 [E] Monotonic Array - ALawliet/algorithms GitHub Wiki
is it either an increasing or decreasing monotonic array?
n-1 so we can track i+1
class Solution:
def isMonotonic(self, A: List[int]) -> bool:
inc = dec = True
for i in range(len(A) - 1):
if A[i] > A[i+1]:
inc = False
if A[i] < A[i+1]:
dec = False
return inc or dec