find the remainder of two numbers in swift

To find the remainder of two numbers in Swift, you can use the modulo operator, represented by the percent symbol (%). The modulo operator returns the remainder of the division of two numbers.

Here's an example code snippet:

main.swift
let a = 10
let b = 3
let remainder = a % b

print(remainder) // Prints 1
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In this example, we declare two constants, a and b, and initialize them with the values 10 and 3, respectively. We then calculate the remainder of a divided by b using the modulo operator, and assign the result to a new constant called remainder. Finally, we print the value of remainder to the console, which should be 1.

You can also use the shorthand compound assignment operator %= to calculate the remainder and assign it to a variable or constant in one step, like this:

main.swift
var x = 15
let y = 4
x %= y

print(x) // Prints 3
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In this example, we declare a variable x with the initial value of 15 and a constant y with the value of 4. We then use the %= operator to calculate the remainder of x divided by y, which is 3, and assign the result back to x. The final value of x is printed to the console.