LeetCode in Kotlin
1812. Determine Color of a Chessboard Square
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.
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
Constraints:
coordinates.length == 2'a' <= coordinates[0] <= 'h''1' <= coordinates[1] <= '8'
Solution
class Solution {
fun squareIsWhite(coordinates: String): Boolean {
val x = coordinates[0]
val y = (coordinates[1].toString() + "").toInt()
return when (x) {
'a', 'c', 'e', 'g' -> y % 2 == 0
else -> y % 2 != 0
}
}
}