Offset index of an array

const numbers = [1,2,3,4];
const output =move(numbers,1,-1);

 [2,1,3,5,4] console.log(output);

 function move(array,index,offset){ }

https://www.freecodecamp.org/news/swap-two-array-elements-in-javascript/

 

/**

 * Move an element

 * input ->[1,2,3,4,5];

 * move(arr,index,offset)

 * 

 * we should not modify the orignal array

 * 

 * if not possible --> invalid

 * move(input,0,-1)

 * 

*/

const move =(arr,index,offset)=>{

  const position =index+offset;

  

  if(position>=arr.length||position<0){

   

    return 'Invalid';

  }

  

  const clone =[...arr];

  let element=clone.splice(index,1)[0];

  clone.splice(position,0,element)

  return clone;

}

const arr=[1,2,3,4,5];

console.log(move(arr,0,5))