determine-color-of-a-chessboard-square

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Algorithms

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

<img alt="" src="https://assets.leetcode.com/uploads/2021/02/19/screenshot-2021-02-20-at-22159-pm.png" style="width: 400px; height: 396px;" />

Return <code>true</code> if the square is white, and <code>false</code> 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.

&nbsp;
Example 1:

<pre>
Input: coordinates = &quot;a1&quot;
Output: false
Explanation: From the chessboard above, the square with coordinates &quot;a1&quot; is black, so return false.
</pre>

Example 2:

<pre>
Input: coordinates = &quot;h3&quot;
Output: true
Explanation: From the chessboard above, the square with coordinates &quot;h3&quot; is white, so return true.
</pre>

Example 3:

<pre>
Input: coordinates = &quot;c7&quot;
Output: false
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>coordinates.length == 2</code></li>
	<li><code>&#39;a&#39; &lt;= coordinates[0] &lt;= &#39;h&#39;</code></li>
	<li><code>&#39;1&#39; &lt;= coordinates[1] &lt;= &#39;8&#39;</code></li>
</ul>

squareIsWhite

Determine Color of a Chessboard Square

Check if Two Chessboard Squares Have the Same Color

check-if-two-chessboard-squares-have-the-same-color

检查棋盘方格颜色是否相同

Math

String

给你一个坐标 <code>coordinates</code> ，它是一个字符串，表示国际象棋棋盘中一个格子的坐标。下图是国际象棋棋盘示意图。

<img alt="" src="https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2021/04/03/chessboard.png" style="width: 400px; height: 396px;" />

如果所给格子的颜色是白色，请你返回 <code>true</code>，如果是黑色，请返回 <code>false</code> 。

给定坐标一定代表国际象棋棋盘上一个存在的格子。坐标第一个字符是字母，第二个字符是数字。

 

示例 1：

<pre>
输入：coordinates = "a1"
输出：false
解释：如上图棋盘所示，"a1" 坐标的格子是黑色的，所以返回 false 。
</pre>

示例 2：

<pre>
输入：coordinates = "h3"
输出：true
解释：如上图棋盘所示，"h3" 坐标的格子是白色的，所以返回 true 。
</pre>

示例 3：

<pre>
输入：coordinates = "c7"
输出：false
</pre>

 

提示：

<ul>
	<li><code>coordinates.length == 2</code></li>
	<li><code>'a' <= coordinates[0] <= 'h'</code></li>
	<li><code>'1' <= coordinates[1] <= '8'</code></li>
</ul>