카운트 업

 

// javascript
const solution = (start_num, end_num) => {
    return Array.from({ length: end_num - start_num + 1 }, (_, index) => start_num + index);
};

// typescript
const solution = (start_num:number, end_num:number):number[] => {
    return Array.from({ length: end_num - start_num + 1 }, (_, index) => start_num + index);
};