I need to remove every repetitive character from string that given as array

July 27, 2022

I need to remove every repetitive character from string, all should be good, its working for strings that already given as ‘string’, but if i get array and then transform it to string it didnt work.

function minValue(values){
  values = values.toString("").split(",").join("");
    let result = values.replace(/(.)\1+/g, '$1');
     return result;
}
console.log(minValue([4, 7, 5, 7]));

>Solution :

As it is not clear enough, if the Value will be a string or an Array, i’ve added a guarding if statement, that converts possible strings to an array.

function minValue(values){
  // If you get a string, you'll need to split this into an array
  if(typeof values === "string") values = values.split("");
  
  // A set only accepts distinct values and we can create a new 
  // set by providing an array as a base.
  // We then create a new Array by using the Array.from() mothod, 
  // which can use an array-like structure, to create a new array.
  // This way, we remove any duplicate value from an array and 
  // return the result as a string, by joining all items together.
  return Array.from(new Set(values)).join("");
}

console.log(minValue([4, 7, 5, 7]));