Problem 42781. How many ways to write a number
Given two positive numbers n and k, where n>=k. In how many ways can we write n as sum of k positive numbers. Same numbers but different orders are considered different.
Example
For n=5, k=2 the answer is 4.
5 = 1 + 4
5 = 2 + 3
5 = 3 + 2
5 = 4 + 1
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Anupam Agarwal
on 22 Mar 2016
please correct the reference solution to com(x,k) instead of com(x)
Jihye Sofia Seo
on 12 Feb 2017
Please correct test cases, the function should have 2 arguments.
Ramon Villamangca
on 14 Dec 2021
Error message: Not enough input arguments.
Dyuman Joshi
on 14 Dec 2021
The test suite has been corrected.
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