task.js

let numbers = [
    10,
    10,
    31,
    19,
    18,
    21,
    55,
    23,
    20,
    10,
    10,
    78,
    80,
    99,
    15
  ];
  
  console.log("Original numbers list: ", numbers);
  
  for(let i = 0 ; i < numbers.length ; i++)
  {
  
    for(let j = 0 ; j < numbers.length - 1 ; j++)
    {
  
      if(numbers[j] > numbers[j + 1])
      {
        let temp = numbers[j];
        numbers[j] = numbers[j + 1]
        numbers[j + 1] = temp;
      }
    }
  }
  
  console.log("Numbers list After sorting: ", numbers)
  
  for(let i = 0 ; i < numbers.length ; i++)
  {
    for(let j = 0 ; j < numbers.length - 1 ; j++)
    {
      if(numbers[j] < numbers[j + 1])
      {
        let temp = numbers[j];
        numbers[j] = numbers[j + 1]
        numbers[j + 1] = temp;
      }
    }
  }
  console.log("Numbers list After Desc sorting: ", numbers)