function insertDashes(arr) {
    // write code here
    // splitting words
    const letter = arr.split(' ')

    // empty array to add the join letters 
    const result = []
    for(let i = 0; i < letter.length ; i++){
        result.push(letter[i].split('').join('-'))
    }
    //returning value
    return result.join(' ')
    
}



/**
* 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");
    });
});