3274. Check if Two Chessboard Squares Have the Same Color

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.

img

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).

java

class Solution {
    public boolean isBlack(String field) {
        char[] digs = field.toCharArray();
        return (isOddColumn(digs[0]) && isOddRow(digs[1])) || (isEvenColumn(digs[0]) && isEvenRow(digs[1]));
    }

    public boolean isWhite(String field) {
        return !isBlack(field);
    }

    private boolean isOddColumn(char col) {
        return col == 'a' || col == 'c' || col == 'e' || col == 'g';
    }

    private boolean isEvenColumn(char col) {
        return col == 'b' || col == 'd' || col == 'f' || col == 'h';
    }

    private boolean isOddRow(char row) {
        return row == '1' || row == '3' || row == '5' || row == '7';
    }

    private boolean isEvenRow(char row) {
        return row == '2' || row == '4' || row == '6' || row == '8';
    }
    public boolean checkTwoChessboards(String coordinate1, String coordinate2) {
        return this.isBlack(coordinate1) == this.isBlack(coordinate2);
    }
}