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