/**
 * This function takes a list of numbers as input and returns the first pair of numbers that are not equal.
 *
 * @param numbers A list of numbers
 * @return A tuple containing the first pair of numbers that are not equal, or null if all numbers are equal
 */
fun findNotEqual(numbers: List<Int>): Pair<Int, Int>? {

    var i = 0
    while (i < numbers.size) {
        var j = i + 1
        while (j < numbers.size) {
            if (numbers[i] != numbers[j]) {
                return Pair(numbers[i], numbers[j])
            }
            j++
        }
        i++
    }
    return null
}
/**
 * This function takes a list of numbers as input and returns the first pair of numbers that are not equal.
 *
 * @param numbers A list of numbers
 * @return A tuple containing the first pair of numbers that are not equal, or null if all numbers are equal
 */
fun findNotEqual(numbers: List<Int>): Pair<Int, Int>? {
/**
 * This function takes a list of numbers as input and returns the first pair of numbers that are not equal.
 *
 * @param numbers A list of numbers
 * @return A tuple containing the first pair of numbers that are not equal, or null if all numbers are equal
 */
fun findNotEqual(numbers: List<Int>): Pair<Int, Int>? {

    var i = 0
    while (i < numbers.size) {
        var j = i + 1
        while (j < numbers.size) {
            if (numbers[i] != numbers[j]) {
                return Pair(numbers[i], numbers[j])
            }
            j++
        }
        i++
    }
    return null
}