题解 | #跳台阶#

/**
 * 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
 */
function jumpFloor( number ) {
    // write code here
    let sum = 0
    if (number === 0 || number === 1) {
        return 1
    }
    sum += jumpFloor (number-1)
    sum += jumpFloor (number-2)
    return sum
}
module.exports = {
    jumpFloor : jumpFloor
};