Swift Nested Loops

Swift Nested Loops

Place a loop inside another loop to generate combinations or matrices.

Generate combinations with nested loops

Use inner and outer loops to produce pairs or grids from ranges and collections.

Example

for i in 1...2 {
  for j in 1...3 {
    print(i, j)
  }
}

Multiplication Table

Use nested loops to build a small multiplication table.

Example

for i in 1...3 {
  var row = ""
  for j in 1...3 {
    row += "\(i*j) "
  }
  print(row)
}