6-sirma

function solve(array,commands){
  let shadow = [...array]

  commands.forEach((element) => {

      let [action, ...params] = element.split(' ')
      switch(action){
          case'destroy':
              {
                  const indexToRemove = Number(params[0])
                 if(indexToRemove>=0){
                  shadow.splice(indexToRemove,1)

                 }
                 console.log(shadow)
                 break;
              }
          case 'swap':
              {
                  const index1 = Number(params[0])
                  const index2= Number(params[1])
                  if(index1 >= 0 && index1< shadow.length && index2 >= 0 && index2 < shadow.length){
                      [shadow[index1], shadow[index2]] = [shadow[index2], shadow[index1]]
                      console.log(shadow)
                  }
                  break;
              }
          case 'add':
              {
                  const newId = Number(params[0])
                  shadow.push(newId)
                  console.log(shadow)
                  break;
              }
          case 'insert':{
              const newId = Number(params[0])
              const insertIndex = Number(params[1])
              if (insertIndex >= 0 && insertIndex <= shadow.length) {
                  shadow.splice(insertIndex, 0, newId);
                  console.log(shadow)
              }
          }
          case 'center':
              {
                  const length = shadow.length
                  if(length % 2 === 0){
                      const middleOne = length /2 -1
                      const middleSecond = length / 2
                      console.log(`${shadow[middleOne]} ${shadow[middleSecond]}`)
                  }else{
                      const middle = Math.floor(length/2)
                      console.log(shadow[middle])
                  }
                  break;
              }

      }
  });

  }
  solve([1, 2, 3, 4, 5],
      ["destroy 3",
      "swap 0 1",
      "add 6",
      "center"]
      )
      solve(
          [1, 2, 3, 4, 5],
  ["add 6",
  "swap 0 5",
  "swap 1 4",
  "swap 2 3",
  "swap 2 100",
  "swap 2 2",
  "center"])

  //     )
  //     solve(
  //         [1, 2],
  // ["insert 3 2",
  // "center",
  // "destroy 1",
  // "destroy 2",
  // "center"]

  //     )