Problem 42781. How many ways to write a number

Created by Pritom Kumar Mondal

Solve Later

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

Solve

Solution Stats

72 Solutions
22 Solvers

Last Solution submitted on Jul 31, 2024

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

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.

Solution Comments

Show comments

Problem Recent Solvers22

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 42781. How many ways to write a number

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers22

Suggested Problems

More from this Author5

Problem Tags

Community Treasure Hunt

Problem 42781. How many ways to write a number

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers22

Suggested Problems

More from this Author5

Problem Tags

Community Treasure Hunt

Players