import sys

def main():
    import threading
    def solve():
        t = int(sys.stdin.readline())
        for _ in range(t):
            n = int(sys.stdin.readline())
            a = list(map(int, sys.stdin.readline().split()))
            max_val = a[-1]
            ans = 0
            len_seg = 1
            i = n - 2
            while len_seg < n:
                if i < 0:
                    ans += 1
                    len_seg *= 2
                    continue
                if a[i] == max_val:
                    len_seg += 1
                    i -=1
                else:
                    ans +=1
                    len_seg *=2
            print(ans)
    threading.Thread(target=solve).start()
main()