How to know if a number is odd or even in Swift?

Use the % Remainder Operator (aka the Modulo Operator) to check if a number is even:

if yourNumber % 2 == 0 {
  // Even Number
} else {
  // Odd Number
}

or, use remainder(dividingBy:) to make the same check:

if yourNumber.remainder(dividingBy: 2) == 0 {                
  // Even Number 
} else {
  // Odd Number
}

var myArray = [23, 54, 51, 98, 54, 23, 32];
for myInt: Int in myArray{
  if myInt % 2 == 0 {
    println("\(myInt) is even number")
  } else {
    println("\(myInt) is odd number")
  }
}