Loops in Swift3.0

Swift provides  two types of  for loops.
1) for - in loop
2) for  loop

for - in 

Note*
Swift3.0 remove old C style looping. 

 for loop  in swift 3.0 

While Loop 
A while loop performs a set of statements until a condition becomes false. These kinds of loops are best used when the number of iterations is not known before the first iteration begins. Swift provides two kinds of while loops:

1)while evaluates its condition at the start of each pass through the loop.

2)repeat-while evaluates its condition at the end of each pass through the loop.

while loop

 syntax

 while (condition) {

   // statements

}

Repeat-While Loop

It will execute at least once before checking the condition. Apple chooses to call it repeat-while instead of do-while for making the working of the loop more consistent with it’s name.

Syntax

repeat {

// statements

}while condition

NOTE*
The repeat-while loop in Swift is analogous to a do-while loop in other languages.