题解 | #矩形覆盖#

object Solution {
    /**
    * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
    * 
        * @param number int整型 
        * @return int整型
    */
    def rectCover(number: Int): Int = {
       var c = 3
       if (number <= 2) {
           c = number
       } else {
            var a = 1
            var b = 2
            for (i <- 3 to number) {
                c = a + b
                a = b
                b = c
            }
       }
       c
    }
}