How to check if Two Vectors are Equal in C++


How to check if Two Vectors are Equal in C++ ?

Answer

To check if two vectors are equal in C++, you can use the `==` operator.



✐ Examples

1 Check Equality of Numeric Vectors

In this example,

  1. We create two vectors named vector1 and vector2.
  2. We use the == operator to check if vector1 is equal to vector2.
  3. The == operator returns true if the vectors are equal, otherwise false.

C++ Program

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vector1 = {1, 2, 3};
    std::vector<int> vector2 = {1, 2, 3};
    bool are_equal = vector1 == vector2;
    std::cout << std::boolalpha << are_equal;
    return 0;
}

Output

true

2 Check Equality of Character Vectors

In this example,

  1. We create two vectors named vector1 and vector2.
  2. We use the == operator to check if vector1 is equal to vector2.
  3. The == operator returns true if the vectors are equal, otherwise false.

C++ Program

#include <iostream>
#include <vector>

int main() {
    std::vector<char> vector1 = {'a', 'b', 'c'};
    std::vector<char> vector2 = {'a', 'b', 'c'};
    bool are_equal = vector1 == vector2;
    std::cout << std::boolalpha << are_equal;
    return 0;
}

Output

true

Summary

In this tutorial, we learned How to check if Two Vectors are Equal in C++ language with well detailed examples.




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  2. How to Initialize a Vector in C++ ?
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  4. How to create a Vector of Size N in C++ ?
  5. How to create a Vector of Numbers from 1 to N in C++ ?
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  11. How to get First Item in a Vector in C++ ?
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  14. How to Iterate Over a Vector with Index in C++ ?
  15. How to Iterate Over a Vector in Reverse Order in C++ ?
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  26. How to Sort a Vector in Ascending Order in C++ ?
  27. How to Sort a Vector in Descending Order in C++ ?
  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++ ?
  32. How to Split a Vector in C++ ?
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  36. How to Append a Vector to another Vector in C++ ?
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  39. How to check if Two Vectors have Same Items (Regardless of Order) in C++ ?
  40. How to Convert a Vector of Integers to a Vector of Strings in C++ ?
  41. How to Convert a Vector of Strings to a Vector of Integers in C++ ?
  42. How to Convert a Vector of Floats to a Vector of Strings in C++ ?
  43. How to Convert a Vector of Strings to a Vector of Floats in C++ ?
  44. How to Reverse a Vector in C++ ?
  45. How to Shuffle a Vector in C++ ?
  46. How to Slice a Vector in C++ ?
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  50. How to Filter Items of a Vector based on a Condition in C++ ?
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  54. How to Remove Items from Vector based on a Condition in C++ ?
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