- 01Getting Started
- 02Your First Output (println)
- 03Working with Variables
- 04Conditionals (if statements)
- 05Loops (for statements)
- 06Writing a Function
- 07Working with Lists
- 08Loops (while statements)
- 09Classes (Object-Oriented Programming)
- 10Error Handling (try-catch)
- 11Sorting a List
- 12Recursive Functions
- 13Using the Standard Library
- 14The when Statement
- 15The if Expression
- 16Inheritance (Extending a Class)
- 17Writing Comments
- 18Logical Operators (&&, ||, !)
- 19Constants (const val)
- 20Splitting and Joining Strings (split, joinToString)
- 21Writing Null-Safe Code (the ?: Elvis operator)
- 22Searching a List (contains, find)
- 23Transforming a List (map)
- 24Two-Dimensional Lists (Tabular Data)
- 25Writing a Custom Exception Class
- 26Default Parameter Values
- 27Working with Set
- 28Checking Correctness (Your First Step into Testing)
- 29Higher-Order Functions (Passing a Function as an Argument)
- 30Stacks and Queues (Basic Data Structures)
- 31Type Conversion (Casting) Basics
- 32Intro to Regular Expressions (Pattern Matching)
- 33The Binary Search Algorithm
- 34Building a Caesar Cipher (a Character-Shifting Cipher)
- 35Understanding How Bubble Sort Works
- 36Building and Displaying Dates (Basic Year/Month/Day Operations)
- 37Writing Multiple Test Cases Together
- 38Speeding Up Calculations with Memoization (Caching)
- 39Normalizing Strings (trim, Unifying Case)
- 40Shallow Copy vs. Deep Copy
- 41Enum (Enumerated Types) Basics
- 42Flattening a List
- 43Reversing a String and Checking for Palindromes
- 44Pairing Up Two Lists (the zip operation)
- 45Rounding Numbers (floor, ceil, roundToInt)
- 46Multi-Line Strings (Triple Quotes)
- 47Functions That Return Multiple Values (Pair)
- 48Finding the GCD and LCM (the Euclidean Algorithm)
- 49Formatting Numbers (Padding Digits, Decimal Places)
- 50Cleanup Logic with try/catch/finally
- 51Writing Generic Functions
- 52File Reading and Writing Basics
- 53Generating Random Numbers
- 54Bitwise Operators (and, or, xor, shifts)
- 55Reading Command-Line Arguments
- 56Waiting for a Fixed Amount of Time (Thread.sleep)
- 57Watch Out for Floating-Point Rounding Errors
- 58Reading from Standard Input
- 59FizzBuzz (the Classic Practice Problem)
- 60Checking Whether a Number Is Prime
- 61Set Operations with Set (Union, Intersection, Difference)
- 62Converting Number Bases (Binary, Hex)
- 63Checking Balanced Parentheses (an Application of Stacks)
- 64Checking Whether Two Words Are Anagrams
- 65Checking Whether a Year Is a Leap Year
- 66Converting Temperature (Celsius to Fahrenheit)
- 67Prime Factorization
- 68[Applied] Build a Simple Inventory Management Tool
Functions That Return Multiple Values (Pair)
In this lesson you will learn how to return several values from one function in Kotlin using Pair, so you are not limited to a single return value. This is for anyone searching for "Kotlin Pair multiple return values".
Pair<A, B> returns two values from a function as one unit. It is a handy fit when you want to hand back two related results, such as a minimum and a maximum.
The sample code declares the return type as fun minMax(nums: List<Int>): Pair<Int, Int> and returns both with Pair(nums.min(), nums.max()). The caller receives them together through the destructuring val (min, max) = minMax(...).
A common stumbling block for beginners is the destructuring syntax. Pulling the contents of a Pair out as separate variables needs the special val (a, b) = pair form.
In real-world development you pick to suit the number of values: Triple or a data class when you want to group three or more.
๐งช This site can't compile or run Kotlin directly, so it checks on the spot whether what you typed matches the reference code (scoring happens entirely in your browser โ nothing is sent anywhere).