描述
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.
Example 2:
Input: coordinates = "h3"
Output: true
Explanation: From the chessboard above, the square with coordinates "h3" is white, so return true.
Example 3:
Input: coordinates = "c7"
Output: false
Note:
coordinates.length == 2
'a' <= coordinates[0] <= 'h'
'1' <= coordinates[1] <= '8'
解析
根据题意,就是判断图中对应坐标的格子是不是白色的。思路很简单,不在赘述,更偷懒的方法就是将所有表格的颜色存在一个字典里,直接进行判断速度更快,但是有点麻烦。哈哈。
解答
class Solution(object):
def squareIsWhite(self, coordinates):
"""
:type coordinates: str
:rtype: bool
"""
x = coordinates[0]
y = coordinates[1]
if ((ord(x)-ord('a')+1)+int(y)) % 2 != 0:
return True
return False
运行结果
Runtime: 20 ms, faster than 38.87% of Python online submissions for Determine Color of a Chessboard Square.
Memory Usage: 13.5 MB, less than 45.97% of Python online submissions for Determine Color of a Chessboard Square.
原题链接:leetcode.com/problems/de…
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