Up to the nth element (with.Java)

In this article, we’ve learned about the nth element (with.Java).

We’ll do this by solving a coding test problem, reflecting on the problem we solved, and exploring other ways to solve it.

Let’s start with the problem

Problem

Given a list of integers num_list and an integer n, complete the solution function so that it returns a list containing all elements of num_list from the first element to the nth element.

Example input and output

My solution to the problem

class Solution {
    public int[] solution(int[] num_list, int n) {
        int[] answer = new int[n];
        for(int i = 0; i < n; i++){
            answer[i] = num_list[i];
        }
        } return answer;
    }
}

solution description

int[] answer = new int[n];: Create an integer array answer to store the result. The size of this array is set to n.

for(int i = 0; i < n; i++) : Extract n elements from the beginning of num_list using a loop.

answer[i] = num_list[i];: copy the num_list element at the current index i to the same index in the answer array.

return answer;: Finally return the array answer with n elements from the beginning.