Dashboard Python Collections Piling Up!
from collections import deque
for _ in range(int(input())):
_, dq = int(input()), deque(map(int, input().split()))
for i in reversed(sorted(dq)):
if dq[0] == i:
dq.popleft()
elif dq[-1] == i:
dq.pop()
else:
print("No")
break
else:
print("Yes")
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