function differentSymbolsNaive(str) {
    console.log(str.split(''));
    var temp=[];
    temp.push(str[0]);
    for(let i=1; i<str.length; i++)
        if(!temp.includes(str[i]))
            temp.push(str[i]);
            
    console.log(temp.length);
    return temp.length;
}



/**
* Test Suite 
*/
describe('differentSymbolsNaive()', () => {
    it('returns count of unique characters', () => {
        // arrange
        const str = 'cabca';
        
        // act
        const result = differentSymbolsNaive(str);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(3);
    });
});