1812. Determine Color of a Chessboard Square

Author: SteffiKeranJ

String/squareIsWhite.cpp

@@ -0,0 +1,38 @@
+```
+1812. Determine Color of a Chessboard Square
+
+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.
+
+ 
+
+Example 1:
+
+Input: coordinates = "a1"
+Output: false
+Explanation: From the chessboard above, the square with coordinates "a1" is black, so return false.
+
+Example 2:
+
+Input: coordinates = "h3"
+Output: true
+Explanation: From the chessboard above, the square with coordinates "h3" is white, so return true.
+
+Example 3:
+
+Input: coordinates = "c7"
+Output: false
+
+```
+class Solution {
+public:
+    bool squareIsWhite(string coordinates) {
+        int col = coordinates[0]-'a' + 1;
+        int row = coordinates[1];
+
+        return (col+row)%2 == 1;
+    }
+};