OneBite.Dev - Coding blog in a bite size

Implement A Three Nested Loop In Swift

Code snippet for how to Implement A Three Nested Loop In Swift with sample and detail explanation

Implementing a nested loop in Swift doesn’t have to be a difficult task. This simple article will guide you through creating a three-level nested loop in Swift like a breeze.

Code snippet for Three Nested Loop In Swift

Here’s a basic example code of a three-level nested loop in Swift:

for i in 1...3 {
    for j in 1...3 {
        for k in 1...3 {
            print("i = \(i), j = \(j), k = \(k)")
        }
    }
}

Code Explanation for Three Nested Loop In Swift

The above code snippet leverages the power of nested loops in Swift programming. Let’s break it down step by step:

  • Our outermost loop variable i ranges from 1 through 3. This loop will iterate over its body three times, each time with a different value of i.

  • Inside the outer loop, we see a second loop. This loop also ranges from 1 through 3, with its variable designated as j. Just like the outer loop, it consists of three iterations.

  • Within the second loop, a third loop (the most inner loop) is nested with its variable named k. This loop will also repeat three times.

  • For each iteration of the outer loop, the nested loops go through all their iterations. Considering our provided range, each of the loops has three iterations, thus the overall process will result in a total of 27 iterations (333).

  • The statement print("i = \(i), j = \(j), k = \(k)") gets executed every time the most inner loop (the loop with the k variable) performs an iteration. It prints the current values of i, j, and k to the console, demonstrating the iteration sequence of each loop.

By understanding the basics of this three-level nested loop in Swift, you will be able to construct more complex, highly customized loops to solve a variety of programming problems. With practice, the power of Swift’s looping constructs will become a potent light weapon in your development toolkit.

swift