How to Split a List in C++

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How to Split a List in C++ ?

Answer

To split a list in C++ using std::list, you can iterate through the list and create sublists manually.

✐ Examples

1 Split a List Manually

In this example,

We include the necessary headers: and .
We create a std::list named numbers with initial integer values.
We define a chunk size.
We use a while loop to iterate over the list and create sublists of the specified chunk size.
The sublists are stored in a list, where each element represents a chunk of the original list.
Finally, we print the list of chunks to standard output.

C++ Program

#include <iostream>
#include <list>

int main() {
    std::list<int> numbers = {1, 2, 3, 4, 5, 6, 7, 8};
    int chunkSize = 3;
    std::list<std::list<int>> chunks;
    auto it = numbers.begin();
    while (it != numbers.end()) {
        std::list<int> chunk;
        for (int i = 0; i < chunkSize && it != numbers.end(); ++i) {
            chunk.push_back(*it);
            ++it;
        }
        chunks.push_back(chunk);
    }
    for (const auto& sublist : chunks) {
        for (int num : sublist) {
            std::cout << num << " ";
        }
        std::cout << std::endl;
    }
    return 0;
}

Output

1 2 3 
4 5 6 
7 8

2 Split a List Using Iterators

In this example,

We include the necessary headers: and .
We create a std::list named numbers with initial integer values.
We define a chunk size.
We use iterators to split the list into chunks of the specified size.
Finally, we print the list of chunks to standard output.

C++ Program

#include <iostream>
#include <list>

int main() {
    std::list<int> numbers = {1, 2, 3, 4, 5, 6, 7, 8};
    int chunkSize = 3;
    std::list<std::list<int>> chunks;
    auto it = numbers.begin();
    while (it != numbers.end()) {
        std::list<int> chunk(it, std::next(it, chunkSize));
        chunks.push_back(chunk);
        std::advance(it, chunkSize);
    }
    for (const auto& sublist : chunks) {
        for (int num : sublist) {
            std::cout << num << " ";
        }
        std::cout << std::endl;
    }
    return 0;
}

Output

1 2 3 
4 5 6 
7 8

Summary

In this tutorial, we learned How to Split a List in C++ language with well detailed examples.

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How to Split a List in C++

How to Split a List in C++ ?

Answer

✐ Examples

1 Split a List Manually

C++ Program

Output

2 Split a List Using Iterators

C++ Program

Output

Summary

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