std::ranges::next_permutation, std::ranges::next_permutation_result ...

en.cppreference.com/w/cpp/algorithm/ranges/next_permutation     2025-02-15T00:00:00.0000000
1) Transforms the range [first, last) into the next permutation, where the set of all permutations is ordered lexicographically with respect to binary comparison function object comp and projection function object proj.Returns {last, true} if such a "next permutation" exists; otherwise transforms the range into the lexicographically first permutation as if by ranges:: sort (first, last, comp ...

Standard library header <algorithm> - cppreference.com

en.cppreference.com/w/cpp/header/algorithm     2023-11-27T00:00:00.0000000
< cpp‎ | header C++ ... ranges::next_permutation (C++20) generates the next greater lexicographic permutation of a range of elements (algorithm function object) ranges::prev_permutation (C++20) generates the next smaller lexicographic permutation of a range of elements

Algorithms library - cppreference.com

en.cppreference.com/w/cpp/algorithm/     2025-02-14T00:00:00.0000000
Constrained algorithms (since C++20) C++20 provides constrained versions of most algorithms in the namespace std::ranges.In these algorithms, a range can be specified as either an iterator-sentinel pair or as a single range argument, and projections and pointer-to-member callables are supported. Additionally, the return types of most algorithms have been changed to return all potentially ...

Constrained algorithms (since C++20) - cppreference.com

en.cppreference.com/w/cpp/algorithm/ranges     2024-11-27T00:00:00.0000000
C++20 provides constrained versions of most algorithms in the namespace std::ranges.In these algorithms, a range can be specified as either an iterator-sentinel pair or as a single range argument, and projections and pointer-to-member callables are supported. Additionally, the return types of most algorithms have been changed to return all potentially useful information computed during the ...

std::ranges::next - cppreference.com

en.cppreference.com/w/cpp/iterator/ranges/next     2024-01-05T00:00:00.0000000
Return the n th successor of iterator i.. The function-like entities described on this page are algorithm function objects (informally known as niebloids), that is: . Explicit template argument lists cannot be specified when calling any of them.

std::next_permutation - cppreference.com

en.cppreference.com/w/cpp/algorithm/next_permutation     2024-04-09T00:00:00.0000000
Returns true if such a "next permutation" exists; otherwise transforms the range into the lexicographically first permutation (as if by std::sort) and returns false. 1) The set of all permutations is ordered lexicographically with respect to operator < (until C++20) std:: less { } (since C++20) .

std::ranges::includes - cppreference.com

en.cppreference.com/w/cpp/algorithm/ranges/includes     2025-02-12T00:00:00.0000000
Both ranges must be sorted with the given comparison function comp.A subsequence need not be contiguous. The function-like entities described on this page are algorithm function objects (informally known as niebloids), that is: . Explicit template argument lists cannot be specified when calling any of them.

std::experimental::ranges::is_permutation - cppreference.com

www.en.cppreference.com/w/cpp/experimental/ranges/algorithm/is_permutation.html
1) Returns true if there exists a permutation of the elements in range [first1, last1) that makes the range equal to [first2, last2), and false otherwise. 2) Same as (1) , but uses r1 as the first source range and r2 as the second source range, as if using ranges:: begin ( r1 ) as first1 , ranges:: end ( r1 ) as last1 , ranges:: begin ( r2 ) as ...

std::ranges::is_permutation - cppreference.com

en.cppreference.com/w/cpp/algorithm/ranges/is_permutation     2025-02-15T00:00:00.0000000
The ranges::is_permutation can be used in testing, e.g. to check the correctness of rearranging algorithms such as sorting, shuffling, partitioning. If p is an original sequence and q is a "mutated" sequence, then ranges:: is_permutation (p, q) == true means that q consist of "the same" elements (maybe permuted) as p. Possible implementation

std::ranges:: merge, std::ranges:: merge_result - en.cppreference.com

en.cppreference.com/w/cpp/algorithm/ranges/merge.html     2025-02-10T00:00:00.0000000
Return value {last1, last2, result_last}, where result_last is the end of the constructed range.[] ComplexitAt most N − 1 comparisons and applications of each projection, where N = ranges:: distance (first1, last1) + ranges:: distance (first2, last12). [] NoteThis algorithm performs a similar task as ranges:: set_union does. Both consume two sorted input ranges and produce a sorted output ...
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