Learn Kotlin with the Kotlin Team: Advent of Code 2020 #6
We continue to learn Kotlin with the Kotlin team.
Grouping and counting the characters in strings and collections is a very typical task given in coding interviews. Usually, the solutions for such tasks are quite simple. In this video, we learn about a few useful functions in Kotlin that make set operations really simple.
Day 6: Custom customs
Learn how to group and count characters in strings and collections using the standard library functions: 'map', 'reduce', 'sumOf', 'intersect', and 'union'.
0:00 Introduction
0:48 Task description
1:30 Reading the input
2:00 Naive solution
3:00 Use sumOf function
3:22 Part 2 of the challenge
4:00 Naive solution to the 2nd part
6:01 Using reduce function
6:30 Refactoring the solution
8:47 Common solution to both parts
9:30 Outro
Solution → https://github.com/kotlin-hands-on/ad...
Blog post → https://blog.jetbrains.com/kotlin/202...
Puzzle description on Advent of Code → https://adventofcode.com/2020/day/6
Idiomatic Kotlin: Solving Advent of Code Puzzles Series • Learn Kotlin with The Kotlin Team: So...
Used with the permission of Advent of Code (Eric Wastl)
#Kotlin #Idiomatic #Tutorial #AdventOfCode #AdventOfCode2020 #AdventOfСodeInKotlin #Day6
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