remove duplicates

by sramnan

JavaScript

function remDup(arr) {
  var obj = {};
  var result = [];
  var count = 0;
  for (var i = 0; i < arr.length; i++) {
    if(!obj[arr[i]]){
    obj[arr[i]] = count + 1;
    }
    
  }
  for(var key in obj){
  result.push(key);
  }
  console.log(JSON.stringify(obj));
  return result;
}

console.log(remDup([1,2,2,3,4]));