const avoidObstacles = (nums) => {
        let maxNum = Math.max(...nums);

        for (let i=1; i<maxNum; i++) {
            if(nums.every((currentNumber) => currentNumber % i !== 0)) {
                return i;
            } 
        }
}


/**
* Test Suite 
*/
describe('avoidObstacles()', () => {
    it('returns minimal number of jumps in between numbers', () => {
        // arrange
        const nums = [5, 3, 6, 7, 9];
        
        // act
        const result = avoidObstacles(nums);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(4);
    });
});