How to create a Three Dimensional Vector in C++

How to create a Three Dimensional Vector in C++ ?

Answer

To create a three-dimensional vector in C++, you can use nested vectors.


✐ Examples

1 Create a Numeric Three-Dimensional Vector

In this example,

  1. We include the vector header.
  2. We declare a vector of vectors of vectors, representing a three-dimensional structure.
  3. We specify the dimensions of the vector using nested vectors.
  4. We assign values to the elements of the vector.

C++ Program

#include <iostream>
#include <vector>

int main() {
    // Step 1: Create a numeric three-dimensional vector
    std::vector<std::vector<std::vector<int>>> three_dimensional_vector = {
        {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}},
        {{10, 11, 12}, {13, 14, 15}, {16, 17, 18}},
        {{19, 20, 21}, {22, 23, 24}, {25, 26, 27}}
    };

    // Step 2: Print the vector
    for (const auto& layer : three_dimensional_vector) {
        for (const auto& row : layer) {
            for (int element : row) {
                std::cout << element << " ";
            }
            std::cout << std::endl;
        }
        std::cout << std::endl;
    }

    return 0;
}

Output

1 2 3 
4 5 6 
7 8 9 

10 11 12 
13 14 15 
16 17 18 

19 20 21 
22 23 24 
25 26 27

2 Create a String Three-Dimensional Vector

In this example,

  1. We include the vector and string headers.
  2. We declare a vector of vectors of vectors, representing a three-dimensional structure.
  3. We specify the dimensions of the vector using nested vectors.
  4. We assign values to the elements of the vector.

C++ Program

#include <iostream>
#include <vector>
#include <string>

int main() {
    // Step 1: Create a string three-dimensional vector
    std::vector<std::vector<std::vector<std::string>>> three_dimensional_vector = {
        { {"a", "b", "c"}, {"d", "e", "f"}, {"g", "h", "i"} },
        { {"j", "k", "l"}, {"m", "n", "o"}, {"p", "q", "r"} },
        { {"s", "t", "u"}, {"v", "w", "x"}, {"y", "z", "!"} }
    };

    // Step 2: Print the vector
    for (const auto& layer : three_dimensional_vector) {
        for (const auto& row : layer) {
            for (const auto& element : row) {
                std::cout << element << " ";
            }
            std::cout << std::endl;
        }
        std::cout << std::endl;
    }

    return 0;
}

Output

a b c 
d e f 
g h i 

j k l 
m n o 
p q r 

s t u 
v w x 
y z !

Summary

In this tutorial, we learned How to create a Three Dimensional Vector in C++ language with well detailed examples.


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  26. How to Sort a Vector in Ascending Order in C++ ?
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  28. How to create a Two Dimensional Vector in C++ ?
  29. How to Iterate over a Two Dimensional Vector in C++ ?
  30. How to create a Three Dimensional Vector in C++ ?
  31. How to Copy a Vector in C++ ?
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  40. How to Convert a Vector of Integers to a Vector of Strings in C++ ?
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  54. How to Remove Items from Vector based on a Condition in C++ ?
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