micro-optimization-digit-sum

Micro Optimization: Digit Sum

• Completed at: 2023-01-09T03:40:35.753Z

• Completed languages: ruby

• Tags: Fundamentals

• Rank: 6 kyu

Description

You wrote a program that can calculate the sum of all the digits of a non-negative integer.

However, it's not fast enough. Can you make it faster?

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Input size

Haskell:
- 50 random tests of `n <= 2^64`
- 50 random tests of `n <= 2^200000`

Python:
- 50 random tests of `n <= 2^64`
- 50 random tests of `n <= 2^120000`

Ruby:
- 50 random tests of `n <= 2^64`
- 50 random tests of `n <= 2^100000`