function insertDashes(arr) {
    // write code here
    const splitArr = arr.split('');
    for (i = 0; i < arr.length - 1; i++) {
        if (splitArr[i+1] === ' ') {
            
        } else if (splitArr[i] !== ' ') {
            splitArr[i] = `${splitArr[i]}-`;
        }
    }
    return splitArr.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");
    });
});