Newgen

 /*

find the max occurence of element in arr

output =>{

  3:4

}

*/

 const arr =[1,2,2,2,,4,5,3,3,3,3];

function maxOccurance(arr){

  let hashMap={}

  let maxOccuranceKey=0;

  let ans={}

    for(let el of arr){

      if(hashMap[el] !==undefined){

        hashMap[el]+=1;

        maxOccuranceKey = Math.max(maxOccuranceKey,hashMap[el])

      }

      else{

        hashMap[el]=1;

      }

  }

  Object.entries(hashMap).forEach(([key,val])=>{

  if(val===maxOccuranceKey){

    ans[key]=val;

  }

  })

  return ans;

}

const res= maxOccurance(arr);

console.log(res)

// const optimized=useCallback(()=>{

  

// },[])