How do I merge and splice sequences with std::deque?

Merging and Splicing Sequences with std::deque

The std::deque (double-ended queue) in C++ is a versatile data structure that allows for efficient addition and removal of elements from both ends. Merging and splicing are two operations that can be performed on deques to manipulate their contents. This article explains how you can merge two deques and splice elements from one deque into another.

How to Merge Two Deques

To merge two deques, you can use the insert method to append elements from one deque to another. Here's a basic example:


    #include <iostream>
    #include <deque>

    int main() {
        std::deque<int> deque1 = {1, 2, 3};
        std::deque<int> deque2 = {4, 5, 6};

        // Merging deque1 and deque2
        deque1.insert(deque1.end(), deque2.begin(), deque2.end());

        // Output the merged deque
        for (int num : deque1) {
            std::cout << num << " ";
        }
        return 0;
    }

How to Splice Elements from One Deque to Another

Splicing involves transferring a portion of one deque to another without copying elements. This can be done using the splice method:


    #include <iostream>
    #include <deque>

    int main() {
        std::deque<int> source = {1, 2, 3, 4, 5};
        std::deque<int> target;

        // Splicing first two elements from source into target
        target.splice(target.end(), source, source.begin(), source.begin() + 2);

        // Output the target deque
        for (int num : target) {
            std::cout << num << " ";
        }
        return 0;
    }

Merging Splicing std::deque C++ Data Structures Programming Example

How do I merge and splice sequences with std::deque?

Merging and Splicing Sequences with std::deque

How to Merge Two Deques

How to Splice Elements from One Deque to Another

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How do I merge and splice sequences with std::deque?

Merging and Splicing Sequences with std::deque

How to Merge Two Deques

How to Splice Elements from One Deque to Another

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