std::ranges::is_permutation - cppreference.com

en.cppreference.com/w/cpp/algorithm/ranges/is_permutation     2025-02-15T00:00:00.0000000
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. None of them are visible to argument-dependent lookup.; When any of them are found by normal unqualified lookup as the name to the left of the function-call operator, argument-dependent lookup ...

std::is_permutation - cppreference.com

en.cppreference.com/w/cpp/algorithm/is_permutation     2025-02-11T00:00:00.0000000
The std::is_permutation can be used in testing, namely to check the correctness of rearranging algorithms (e.g. sorting, shuffling, partitioning). If x is an original range and y is a permuted range then std:: is_permutation (x, y) == true means that y consist of "the same" elements, maybe staying at other positions. Example

std::experimental::ranges:: is_permutation - Reference

en.cppreference.com/w/cpp/experimental/ranges/algorithm/is_permutation
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 ...

Algorithms library - cppreference.com

en.cppreference.com/w/cpp/algorithm/     2025-02-14T00:00:00.0000000
generates the next smaller lexicographic permutation of a range of elements (algorithm function object) is_permutation (C++11) determines if a sequence is a permutation of another sequence ... __cpp_lib_algorithm_iterator_requirements: 202207L (C++23) Ranges iterators as inputs to non-Ranges algorithms __cpp_lib_clamp: 201603L (C++17)

Ranges library (since C++20) - cppreference.com

en.cppreference.com/w/cpp/ranges/     2025-02-20T00:00:00.0000000
The ranges library includes range algorithms, which are applied to ranges eagerly, and range adaptors, which are applied to views lazily. Adaptors can be composed into pipelines, so that their actions take place as the view is iterated. ... __cpp_lib_ranges_to_input: 202502L (C++26) ranges:: to_input_view __cpp_lib_ranges_zip: 202110L (C++23 ...

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

en.cppreference.com/w/cpp/algorithm/ranges.html     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 ...

Standard library header <algorithm> - cppreference.com

en.cppreference.com/w/cpp/header/algorithm     2023-11-27T00:00:00.0000000
< cpp‎ | header C++ ... 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 (algorithm function object) Synopsis ...

Experimental library header <experimental/ranges/algorithm> - Reference

en.cppreference.com/w/cpp/header/experimental/ranges/algorithm
finds the first two adjacent items that are equal (or satisfy a given predicate) (function template)

Extensions for ranges - cppreference.com

en.cppreference.com/w/cpp/experimental/ranges.html     2023-11-28T00:00:00.0000000
The Ranges TS is based on the C++14 standard as modified by the Concepts TS. Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard as of 10/2018; see the ranges library , the constrained algorithms library , and the core concepts library (since C++20)

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 ...
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