Programs

Find duplicates values program

let arr = [2, 7, 3, 8, 2, 9, 8, 3]
var duplicates = Set<Int>()

for i in 0..<arr.count {
    for j in i+1..<arr.count {
        if arr[i] == arr[j] {
            duplicates.insert(arr[i])
        }
    }
}
print("duplicates values: \(duplicates) & count: (duplicates.count)")

PrintNumberTriangle

import Foundation

func printNumberTriangle(rows: Int) {
    for i in 1...rows {
        var line = ""
        for j in 1...I {
            line += "\(j) "
        }
        print(line.trimmingCharacters(in: .whitespaces))
    }
}

printNumberTriangle(rows: 5)