C# sort an array in a single loop in O(n)

using System;
using System.IO;
using System.Runtime.CompilerServices;


namespace ConsoleApp16
{
    internal class Program
    {
        static void Main(string[] args)
        {
            GenArray(100); 
        } 

        static int[] SortArray(int[] arr)
        {
            int len = arr.Length;
            for(int i=0;i<len-1;i++)
            {
                int temp1 = arr[i];
                int temp2= arr[i+1];
                if(temp1>temp2)
                {
                    int temp = arr[i];
                    arr[i] = arr[i + 1];
                    arr[i+1] = temp;
                    i = - 1;
                }
            }
            return arr;
        }

        static void GenArray(int len)
        {
            int[] arr = new int[len];
            Random rnd = new Random();
            for(int i=0;i<len;i++)
            {
                arr[i] = rnd.Next(0, Int32.MaxValue);
            }

            foreach(int i in arr)
            {
                Console.Write(i + "\t");
            }
            Console.WriteLine("\n\n\nAfter sort:");
            arr=SortArray(arr);
            foreach (int i in arr)
            {
                Console.Write(i + "\t");
            }
            Console.WriteLine();
        }
    }
}

static int[] SortArray(int[] arr)
{
    int len = arr.Length;
    for(int i=0;i<len-1;i++)
    {
        int temp1 = arr[i];
        int temp2= arr[i+1];
        if(temp1>temp2)
        {
            int temp = arr[i];
            arr[i] = arr[i + 1];
            arr[i+1] = temp;
            i = - 1;
        }
    }
    return arr;
}