# # 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 # # # @param n int整型 # @return bool布尔型 # class Solution: def happynum(self , n: int) -> bool: # write code here a = [0,1,4,9,16,25,36,49,64,81] ans = [] temp = n while True: if temp in ans: return False if str(temp)==('1'+'0'*(len(str(temp))-1)): return Tr...