Check out example codes for "how to get last element of set in c++". It will help you in understanding the concepts better.

Code Example 1

set<int> s = {1,2,3}
auto it = s.end();
it--;
cout<<*it<<"\n"; // This refers to last element of a set

Code Example 2

const nums = [1, 2, 3, 4, 5, 6, 7];
const lastOne = nums[nums.lenght - 1]; // last element of array

Code Example 3

list.get(0);

Code Example 4

!list_or_set.isEmpty()

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