January 10 - Build a Dynamic Sum Method in Ruby
This coding exercise walks through how to build a method that takes a single integer as an argument and builds a sum of all of the integers counting up to the argument value.
Guide Tasks
- Read Tutorial
- Watch Guide Video
- Complete the Exercise
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Summary
Build a program that sums all of the integers up to, and including any value passed in as an argument.
Exercise Description
The program should be able to take in a single argument of an integer, and output the sum of all of the integers up to the argument's value.
Sample Input
10
Sample Output
55
Real World Usage
This is a common Ruby coding interview question. Additionally, being able to create dynamic ranges and perform calculations on the collection is important in a number of applications.