import Foundation
/// Generates a single random color channel (0...255)
func randomChannel() -> Int {
// Int.random(in:) is Swift’s idiomatic RNG
Int.random(in: 0...255)
}
/// Builds a full random HEX color, e.g. "#a3f09c"
func randomHexColor() -> String {
let r: Int = randomChannel()
let g: Int = randomChannel()
let b: Int = randomChannel()
// Format each channel as two-digit lowercase hex
return String(format: "#%02x%02x%02x", r, g, b)
}
/// Generates N unique random HEX colors
func generateRandomUniqueHexColors(_ count: Int) -> [String] {
// Set ensures uniqueness automatically
var colors: Set<String> = []
// Keep generating until we have the desired number
while colors.count < count {
colors.insert(randomHexColor())
}
// Convert Set → Array
return Array(colors)
}
// Example usage
let n: Int = 12
let colors: [String] = generateRandomUniqueHexColors(n)
print("Generated HEX colors:")
colors.forEach { print($0) }
/*
run:
Generated HEX colors:
#d67f67
#e8a0e3
#3b1e3c
#faddbf
#59820c
#8629ee
#ef313d
#fc8c01
#5c9696
#c58a7c
#39ec0c
#28dcf5
*/
