text: let arr = [1, 6, 43, 65, 10];
  
  let key = 43;
  
  let position = find(arr, key);
  
  function find(arr, key){
      
      for(let i = 0; i < arr.length; i++){
          if(arr[i]==key){
              return i;
          }
      }
  }
  
  console.log(`The position of the element ${key} is ${position}`);
  
  