function insertDashes(arr) {
    const word = arr.split('');
    let wordWithDashes = '';
    for (let i =0; i < word.length; i++) {
        wordWithDashes += word[i];
         if ((i !== word.length - 1) && (word[i + 1] !== " ") && (word[i] !== " "))
            wordWithDashes += `-`;
    }
    return wordWithDashes;
}



/**
* Test Suite 
*/
describe('insertDashes()', () => {
    it('insert dashes in between chars', () => {
        // arrange
        const value = "aba caba";
        
        // act
        const result = insertDashes(value);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe("a-b-a c-a-b-a");
    });
});