function differentSymbolsNaive(str) {
    //  write code here.
    //includes split push
    
    let newString = str.split("");
    let newArray = [];
    
    for (let i = 0; i < newString.length; i++) {
        if (newString.includes(newString[i])
            && !newArray.includes(newString[i])) {
            newArray.push(newString[i])
        }
    }
    return newArray.length;
}



/**
* Test Suite 
*/
describe('differentSymbolsNaive()', () => {
    it('returns count of unique characters', () => {
        // arrange
        const str = 'cabca';
        //const str = 'cabca123';
        //const str = 'cabca123#'
        
        // act
        const result = differentSymbolsNaive(str);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(3);
        //expect(result).toBe(6);
        //expect(result).toBe(7);
    });
});