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The 1,10 is converted into 26, but it needs to be noticed minus 1 first.

2,CHR (i): Returns the ASCII character corresponding to the integer i. Contrary to the Ord () effect.

3, reverse return can be directly used res[::-1].

There is no append (Var), insert (Index,var), Pop (Var), and other methods that are owned by a list of string types in 4,python, which require special attention.

5,python does not have to declare data types like C + +, but can also be declared, such as string= ' (string), list=[] (list), tuple= (1,1,2,3,) (cannot be changed after a tuple declaration)

classSolution: # @param {integer} N # @return {string} def converttotitle (self, N): Flag=Nstring="'         whilen!=0: REM= (n1)% -N= (n1)/ -REM=CHR (rem+ $)            string+=(REM)return string[::-1]

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