How to Reduce Values in a Dictionary to a Single Value in Swift - Step by Step Examples

How to Reduce Values in a Dictionary to a Single Value in Swift ?

Answer

To reduce values in a dictionary to a single value in Swift, you can use the `reduce` method. This allows you to apply a function to each value in the dictionary and combine them into a single value.

✐ Examples

1 Reducing Values in a Dictionary to Their Sum Using `reduce`

We can reduce the values in a dictionary to their sum in Swift using the `reduce` method. This example demonstrates how to declare and initialize a dictionary, use the `reduce` method to sum the values, and print the result.

For example,

We start by declaring and initializing a dictionary named myDictionary with integer keys and integer values.
We use the `reduce` method to sum the values in the dictionary.
We print the result.

Swift Program

var myDictionary: [Int: Int] = [
    1: 10,
    2: 20,
    3: 30
]

// Use reduce to sum the values in the dictionary
let sumValues = myDictionary.values.reduce(0, +)

// Print the result
print("Sum of values: \(sumValues)")

Output

Sum of values: 60

2 Reducing Values in a Dictionary to Their Product Using `reduce`

We can reduce the values in a dictionary to their product in Swift using the `reduce` method. This example demonstrates how to declare and initialize a dictionary, use the `reduce` method to multiply the values, and print the result.

For example,

We start by declaring and initializing a dictionary named myDictionary with integer keys and integer values.
We use the `reduce` method to multiply the values in the dictionary.
We print the result.

Swift Program

var myDictionary: [Int: Int] = [
    1: 10,
    2: 20,
    3: 30
]

// Use reduce to multiply the values in the dictionary
let productValues = myDictionary.values.reduce(1, *)

// Print the result
print("Product of values: \(productValues)")

Output

Product of values: 6000

Summary

In this tutorial, we learned How to Reduce Values in a Dictionary to a Single Value in Swift language with well detailed examples.

◀ Previous Next ▶

Swift Tutorials

Swift How-Tos

How to Reduce Values in a Dictionary to a Single Value in Swift - Step by Step Examples