EasyNo. 1812
Determine Color of a Chessboard Square — LeetCode 1812 Python Solution
- Pattern
- Math and Number Theory
- Topics
- Math, String
- Reading time
- 2 min
- Source
- leetcode.com
The problem
You are given coordinates, a string that represents the coordinates of a square of the chessboard. Below is a chessboard for your reference.
Example
- Input
- coordinates = "a1"
- Output
- false
- Explanation
- From the chessboard above, the square with coordinates "a1" is black, so return false.
Python solution
class Solution:
def squareIsWhite(self, coordinates: str) -> bool:
return (ord(coordinates[0]) + ord(coordinates[1])) % 2 == 1Complexity
- Time
- O(1)
- Space · auxiliary
- O(1)
Pattern: Math and Number Theory
Find the closed form, the invariant, or the modular identity — and skip the loop entirely. LeetCode 1812. Determine Color of a Chessboard Square is filed here on both counts: the reference solution below belongs to the algorithm family this hub collects, and LeetCode tags it Math.
The math and number theory guide has the Python template for the pattern and the 485 LeetCode problems that use it.
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Frequently asked questions
- How hard is LeetCode 1812. Determine Color of a Chessboard Square?
LeetCode 1812. Determine Color of a Chessboard Square is rated Easy on LeetCode.
- What is the time complexity of LeetCode 1812. Determine Color of a Chessboard Square?
The Python solution on this page runs in O(1).
- What is the space complexity of LeetCode 1812. Determine Color of a Chessboard Square?
The Python solution on this page uses O(1) auxiliary space.
- What topics does LeetCode 1812. Determine Color of a Chessboard Square cover?
LeetCode 1812. Determine Color of a Chessboard Square is tagged Math and String on LeetCode.