How to Slice Last N Elements from a List in C++ - Step by Step Examples

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How to Slice Last N Elements from a List in C++ ?

Answer

To slice the last N elements from a list in C++, you can use reverse iterators along with the std::list container.

✐ Examples

1 Slice the Last N Elements of a List of Integers

In this example,

We create a list named numbers with integer values.
We use reverse iterators and the std::advance function to position the iterators at the beginning of the slice.
We then construct a new list named slicedNumbers using the reverse iterators.
Finally, we print the sliced list to standard output.

C++ Program

#include <iostream>
#include <list>
#include <iterator>

int main() {
    std::list<int> numbers = {1, 2, 3, 4, 5};
    int n = 3;
    auto it = numbers.rbegin();
    std::advance(it, n);
    std::list<int> slicedNumbers(numbers.rbegin(), it);
    for (int num : slicedNumbers) {
        std::cout << num << " ";
    }
    std::cout << std::endl;
    return 0;
}

Output

Sliced list: 3 2 1

2 Slice the Last N Elements of a List of Strings

In this example,

We create a list named words with string values.
We use reverse iterators and the std::advance function to position the iterators at the beginning of the slice.
We then construct a new list named slicedWords using the reverse iterators.
Finally, we print the sliced list to standard output.

C++ Program

#include <iostream>
#include <list>
#include <iterator>
#include <string>

int main() {
    std::list<std::string> words = {"apple", "banana", "cherry", "date", "elderberry"};
    int n = 2;
    auto it = words.rbegin();
    std::advance(it, n);
    std::list<std::string> slicedWords(words.rbegin(), it);
    for (const std::string& word : slicedWords) {
        std::cout << word << " ";
    }
    std::cout << std::endl;
    return 0;
}

Output

Sliced list: date cherry

Summary

In this tutorial, we learned How to Slice Last N Elements from a List in C++ language with well detailed examples.

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How to Slice Last N Elements from a List in C++ - Step by Step Examples

How to Slice Last N Elements from a List in C++ ?

Answer

✐ Examples

1 Slice the Last N Elements of a List of Integers

C++ Program

Output

2 Slice the Last N Elements of a List of Strings

C++ Program

Output

Summary

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