Add solution #1812

Author: JoshCrozier

README.md

@@ -264,6 +264,7 @@
 1748|[Sum of Unique Elements](./1748-sum-of-unique-elements.js)|Easy|
 1780|[Check if Number is a Sum of Powers of Three](./1780-check-if-number-is-a-sum-of-powers-of-three.js)|Medium|
 1791|[Find Center of Star Graph](./1791-find-center-of-star-graph.js)|Easy|
+1812|[Determine Color of a Chessboard Square](./1812-determine-color-of-a-chessboard-square.js)|Easy|
 1832|[Check if the Sentence Is Pangram](./1832-check-if-the-sentence-is-pangram.js)|Easy|
 1880|[Check if Word Equals Summation of Two Words](./1880-check-if-word-equals-summation-of-two-words.js)|Easy|
 1886|[Determine Whether Matrix Can Be Obtained By Rotation](./1886-determine-whether-matrix-can-be-obtained-by-rotation.js)|Easy|

solutions/1812-determine-color-of-a-chessboard-square.js

@@ -0,0 +1,22 @@
+/**
+ * 1812. Determine Color of a Chessboard Square
+ * https://leetcode.com/problems/determine-color-of-a-chessboard-square/
+ * Difficulty: Easy
+ *
+ * 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.
+ */
+
+/**
+ * @param {string} coordinates
+ * @return {boolean}
+ */
+var squareIsWhite = function(coordinates) {
+  const [x, y] = coordinates;
+  return (x.charCodeAt() + +y) % 2 !== 0;
+};