Introduction

In this blog post, we will explore how to solve the LeetCode problem "3274" using AI. LeetCode is a popular platform for preparing for coding interviews, and with the help of AI tools like Chatmagic, we can generate solutions quickly and efficiently - helping you pass the interviews and get the job offer without having to study for months.

Problem Statement

You are given two strings, coordinate1 and coordinate2, representing the coordinates of a square on an 8 x 8 chessboard. Below is the chessboard for reference. Return true if these two squares have the same color and false otherwise. The coordinate will always represent a valid chessboard square. The coordinate will always have the letter first (indicating its column), and the number second (indicating its row). Example 1: Input: coordinate1 = "a1", coordinate2 = "c3" Output: true Explanation: Both squares are black. Example 2: Input: coordinate1 = "a1", coordinate2 = "h3" Output: false Explanation: Square "a1" is black and "h3" is white. Constraints: coordinate1.length == coordinate2.length == 2 'a' <= coordinate1[0], coordinate2[0] <= 'h' '1' <= coordinate1[1], coordinate2[1] <= '8'

Explanation

Here's the breakdown of the solution:

• Parity Check: Determine if the column (letter) and row (number) of each coordinate represent an even or odd number.
• Color Determination: A square is black if the sum of the column's parity and the row's parity is even; otherwise, it's white.

• Comparison: Compare the colors of the two squares. If they are the same, return True; otherwise, return False.

• Runtime Complexity: O(1) & Storage Complexity: O(1)

Code

    class Solution:
    def squareIsWhite(self, coordinate1: str, coordinate2: str) -> bool:
        """
        Determines if two chessboard squares have different colors.

        Args:
            coordinate1: The coordinate of the first square (e.g., "a1").
            coordinate2: The coordinate of the second square (e.g., "c3").

        Returns:
            True if the squares have different colors, False otherwise.
        """

        def get_color(coordinate: str) -> bool:
            """
            Determines if a square is white (True) or black (False).
            """
            col = ord(coordinate[0]) - ord('a') + 1  # Convert letter to column number (1-8)
            row = int(coordinate[1])  # Row number (1-8)

            return (col + row) % 2 != 0  # True if white, False if black

        return get_color(coordinate1) != get_color(coordinate2)