1812. Determine Color of a Chessboard Square

You are given coordinates, a string that represents the coordinates of a square of the chessboard. Below is a chessboard for your reference.

Return true if the square is white, and false if the square is black.

The coordinate will always represent a valid chessboard square. The coordinate will always have the letter first, and the number second.

Example 1:

Input: coordinates = "a1"
Output: false
Explanation: From the chessboard above, the square with coordinates "a1" is black, so return false.

Constraints:

• coordinates.length == 2
• 'a' <= coordinates[0] <= 'h'
• '1' <= coordinates[1] <= '8'

注意找规律，从最简单的思路想起

class Solution {
publicbool squareIsWhite(string c) {
        return (c[0]+c[1])%2;
    }
};

class Solution:
    def squareIsWhite(self, c: str) -> bool:
        return (ord(c[0])+ord(c[1]))%2

需要注意：C++中字符相加是可以的，会自动转成相应的ASCII相加，而Python中需要用ord函数，将字符转换成其对应的ASCII