findPalindromeNumbersRange()

Step 1: Understand the Problem

We need to find all the palindrome numbers within a given range. A palindrome number is a number that remains the same when its digits are reversed. As an example, 121 is a palindrome number while 123 is not.

As a first step, we can start with defining the main function findPalindromeNumbersInRange. The function has two parameters, start and end, which represent the range within which we are going to find the palindrome numbers.

func findPalindromeNumbersInRange(start: Int, end: Int) {
    
}

Step 2: Loop Through the Numbers In The Range

Next, we need to check each number in the range to see if it is a palindrome. We can do this by setting up a loop from the start value to the end value.

func findPalindromeNumbersInRange(start: Int, end: Int) {
    for number in start...end {
        
    }
}

Step 3: Check If a Number is a Palindrome

To check if a number is a palindrome, we first convert it into a string, then compare the string with its reverse. If they are the same, then the number is a palindrome.

func findPalindromeNumbersInRange(start: Int, end: Int) {
    for number in start...end {
        let stringNumber = String(number)
        if stringNumber == String(stringNumber.reversed()) {
          
        }
    }
}

Step 4: Collect the Palindrome Numbers

Each time we find a palindrome number, we add it to a list. Finally, we return this list at the end of the function.

func findPalindromeNumbersInRange(start: Int, end: Int) -> [Int] {
    var palindromeNumbers = [Int]()
    for number in start...end {
        let stringNumber = String(number)
        if stringNumber == String(stringNumber.reversed()) {
          palindromeNumbers.append(number)
        }
    }
    return palindromeNumbers
}

Step 5: Conclusion

With this function, we can find all the palindrome numbers in a given range. To use this function, you simply need to provide the start and end of the range.

Here is the final implementation of the function:

func findPalindromeNumbersInRange(start: Int, end: Int) -> [Int] {
    var palindromeNumbers = [Int]()
    for number in start...end {
        let stringNumber = String(number)
        if stringNumber == String(stringNumber.reversed()) {
          palindromeNumbers.append(number)
        }
    }
    return palindromeNumbers
}