freeCodeCamp/guide/english/certifications/coding-interview-prep/data-structures/remove-from-a-set/index.md

title

title
Remove from a Set

Remove from a Set

Method:

• In this challenge we need to implement a .remove() method for the Set class we made in the previous challenge.
• The method should return true if the element was successfully removed and false otherwise.

Solution:

function Set() {
    var collection = [];
    this.has = function(element) {
        return (collection.indexOf(element) !== -1);
    };
    this.values = function() {
        return collection;
    };
    this.add = function(element) {
        if(!this.has(element)){
            collection.push(element);
            return true;
        }
        return false;
    };
    this.remove = function(element){
        if (this.has(element)){
            collection.splice(collection.indexOf(element), 1);
            return true;
        }
        return false;
    }
}

Resources:

• Wikipedia