function insertDashes(arr) {
    let tempArray = arr.split(" ");
    let string = "";
    
    for (let i = 0; i < tempArray.length; i++) {
        let tempString = tempArray[i].split("");               
        string += tempString.join('-'); 
        
        if (i != tempArray.length - 1) {
            string += " ";
        }
    }
    
    return string;
}



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