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iOS Swift Basics (retired) Control Flow While and Do-While Loop

Jon Schenck
Jon Schenck
2,028 Points
Posted by Jon Schenck
Jon Schenck
2,028 Points

Given an array of numbers, print out each number in the array using a while loop and the println statement.

I have no idea how to solve this. I have been playing around trying to figure this out and need assistance.

while_loops.swift 
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Jon Schenck
Jon Schenck
2,028 Points
Jon Schenck
Jon Schenck
2,028 Points

Thank you for your help Dan

2 Answers

Meek D
Meek D
3,457 Points

Hope that helps.

     let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]   // this is the array 
       var index = 0; // this variable will be the starting point 
// the condition inside of the loop is saying until the start point is less that the array size print

    while(index < numbers.count){

    println(numbers[index]); 
 // so if the index was 1 ; 1 is less than 10 the size of the array than it would display the value of number[1] which is 2 

     index++; // then increment by 1 which means re-execute this code again
    }
Jon Schenck
Jon Schenck
2,028 Points
Jon Schenck
Jon Schenck
2,028 Points

Thank you for your help Meek

Dan Oswalt
Dan Oswalt
23,438 Points
Dan Oswalt
Dan Oswalt
23,438 Points

Review while loops, they nearly always look like something like this:

var count = 0
while count < n {  // set n to the length of the array

   //some code...

   count++
}