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C++ algorithm is_sorted() function

❮ Algorithm Functions


Example

Find out if a vector is sorted:

vector<int> numbers = {1, 2, 3, 5, 7, 9};

if (is_sorted(numbers.begin(), numbers.end())) {
  cout << "Sorted";
} else {
  cout << "Not sorted";
}
Try it Yourself »

Definition and Usage

The is_sorted() function checks if a data range is sorted in ascending order.

The data range is specified by iterators.

Syntax

is_sorted(iterator start, iterator end);

Parameter Values

Parameter Description
start Required. An iterator pointing to the start of the data range.
end Required. An iterator pointing to the end of the data range. Elements up to this position will be included, but the element at this position will not be.

Technical Details

Returns: A boolean value:
  • 1 - if the data range is sorted
  • 0 - if the data range is not sorted

Related Pages

Read more about data structures in our Data Structures Tutorial.

Read more about iterators in our Iterators Tutorial.

Read more about algorithms in our Algorithms Tutorial.

Read more about booleans in our Booleans Tutorial.


❮ Algorithm Functions

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