Leetcode interview question 16.11 Diving board

You're building a diving board out of a pile of boards . There are two types of planks , The length of the shorter board is shorter, The length of the longer board is longer. You have to just use k A board . Write a method , Generate all possible lengths of the diving board .

The length of the return should be arranged from small to large .

Example 1

 Input ：
shorter = 1
longer = 2
k = 3
 Output ： [3,4,5,6]
 explain ：
 have access to  3  Time  shorter, Get the results