Algorithms library

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Technical Specifications

 

Algorithm library

Functions
Non-modifying sequence operations
all_ofany_ofnone_of (C++11)(C++11)(C++11) for_each countcount_if mismatch equal	findfind_iffind_if_not (C++11) find_end find_first_of adjacent_find search search_n
Modifying sequence operations
copycopy_if (C++11) copy_n (C++11) copy_backward move (C++11) move_backward (C++11) fill fill_n transform generate generate_n removeremove_if remove_copyremove_copy_if	replacereplace_if replace_copyreplace_copy_if swap swap_ranges iter_swap reverse reverse_copy rotate rotate_copy random_shuffleshuffle (until C++17)(C++11) unique unique_copy
Partitioning operations
is_partitioned (C++11) partition partition_copy (C++11)	stable_partition partition_point (C++11)
Sorting operations (on sorted ranges)
is_sorted (C++11) is_sorted_until (C++11) sort	partial_sort partial_sort_copy stable_sort nth_element
Binary search operations (on sorted ranges)
lower_bound upper_bound	binary_search equal_range
Set operations (on sorted ranges)
merge inplace_merge includes	set_difference set_intersection set_symmetric_difference set_union
Heap operations
is_heap (C++11) is_heap_until (C++11) make_heap	push_heap pop_heap sort_heap
Minimum/maximum operations
max max_element min min_element minmax (C++11) minmax_element (C++11)	lexicographical_compare is_permutation (C++11) next_permutation prev_permutation
Numeric operations
iota (C++11) accumulate inner_product	adjacent_difference partial_sum
C library
qsort	bsearch

 

The algorithms library defines functions for a variety of purposes (e.g. searching, sorting, counting, manipulating) that operate on ranges of elements. Note that a range is defined as [first, last) where last refers to the element past the last element to inspect or modify.

Non-modifying sequence operations
Defined in header <algorithm>
all_ofany_ofnone_of (C++11)(C++11)(C++11)	checks if a predicate is true for all, any or none of the elements in a range (function template)
for_each	applies a function to a range of elements (function template)
countcount_if	returns the number of elements satisfying specific criteria (function template)
mismatch	finds the first position where two ranges differ (function template)
equal	determines if two sets of elements are the same (function template)
findfind_iffind_if_not (C++11)	finds the first element satisfying specific criteria (function template)
find_end	finds the last sequence of elements in a certain range (function template)
find_first_of	searches for any one of a set of elements (function template)
adjacent_find	finds the first two adjacent items that are equal (or satisfy a given predicate) (function template)
search	searches for a range of elements (function template)
search_n	searches for a number consecutive copies of an element in a range (function template)
Modifying sequence operations
Defined in header <algorithm>
copycopy_if (C++11)	copies a range of elements to a new location (function template)
copy_n (C++11)	copies a number of elements to a new location (function template)
copy_backward	copies a range of elements in backwards order (function template)
move (C++11)	moves a range of elements to a new location (function template)
move_backward (C++11)	moves a range of elements to a new location in backwards order (function template)
fill	assigns a range of elements a certain value (function template)
fill_n	assigns a value to a number of elements (function template)
transform	applies a function to a range of elements (function template)
generate	saves the result of a function in a range (function template)
generate_n	saves the result of N applications of a function (function template)
removeremove_if	removes elements satisfying specific criteria (function template)
remove_copyremove_copy_if	copies a range of elements omitting those that satisfy specific criteria (function template)
replacereplace_if	replaces all values satisfying specific criteria with another value (function template)
replace_copyreplace_copy_if	copies a range, replacing elements satisfying specific criteria with another value (function template)
swap	swaps the values of two objects (function template)
swap_ranges	swaps two ranges of elements (function template)
iter_swap	swaps the elements pointed to by two iterators (function template)
reverse	reverses the order of elements in a range (function template)
reverse_copy	creates a copy of a range that is reversed (function template)
rotate	rotates the order of elements in a range (function template)
rotate_copy	copies and rotate a range of elements (function template)
random_shuffleshuffle (until C++17)(C++11)	randomly re-orders elements in a range (function template)
unique	removes consecutive duplicate elements in a range (function template)
unique_copy	creates a copy of some range of elements that contains no consecutive duplicates (function template)
Partitioning operations
Defined in header <algorithm>
is_partitioned (C++11)	determines if the range is partitioned by the given predicate (function template)
partition	divides a range of elements into two groups (function template)
partition_copy (C++11)	copies a range dividing the elements into two groups (function template)
stable_partition	divides elements into two groups while preserving their relative order (function template)
partition_point (C++11)	locates the partition point of a partitioned range (function template)
Sorting operations
Defined in header <algorithm>
is_sorted (C++11)	checks whether a range is sorted into ascending order (function template)
is_sorted_until (C++11)	finds the largest sorted subrange (function template)
sort	sorts a range into ascending order (function template)
partial_sort	sorts the first N elements of a range (function template)
partial_sort_copy	copies and partially sorts a range of elements (function template)
stable_sort	sorts a range of elements while preserving order between equal elements (function template)
nth_element	partially sorts the given range making sure that it is partitioned by the given element (function template)
Binary search operations (on sorted ranges)
Defined in header <algorithm>
lower_bound	returns an iterator to the first element not less than the given value (function template)
upper_bound	returns an iterator to the first element greater than a certain value (function template)
binary_search	determines if an element exists in a certain range (function template)
equal_range	returns range of elements matching a specific key (function template)
Set operations (on sorted ranges)
Defined in header <algorithm>
merge	merges two sorted ranges (function template)
inplace_merge	merges two ordered ranges in-place (function template)
includes	returns true if one set is a subset of another (function template)
set_difference	computes the difference between two sets (function template)
set_intersection	computes the intersection of two sets (function template)
set_symmetric_difference	computes the symmetric difference between two sets (function template)
set_union	computes the union of two sets (function template)
Heap operations
Defined in header <algorithm>
is_heap (C++11)	checks if the given range is a max heap (function template)
is_heap_until (C++11)	finds the largest subrange that is a max heap (function template)
make_heap	creates a max heap out of a range of elements (function template)
push_heap	adds an element to a max heap (function template)
pop_heap	removes the largest element from a max heap (function template)
sort_heap	turns a max heap into a range of elements sorted in ascending order (function template)
Minimum/maximum operations
Defined in header <algorithm>
max	returns the larger of two elements (function template)
max_element	returns the largest element in a range (function template)
min	returns the smaller of two elements (function template)
min_element	returns the smallest element in a range (function template)
minmax (C++11)	returns the larger and the smaller of two elements (function template)
minmax_element (C++11)	returns the smallest and the largest element in a range (function template)
lexicographical_compare	returns true if one range is lexicographically less than another (function template)
is_permutation (C++11)	determines if a sequence is a permutation of another sequence (function template)
next_permutation	generates the next greater lexicographic permutation of a range of elements (function template)
prev_permutation	generates the next smaller lexicographic permutation of a range of elements (function template)
Numeric operations
Defined in header <numeric>
iota (C++11)	fills a range with successive increments of the starting value (function template)
accumulate	sums up a range of elements (function template)
inner_product	computes the inner product of two ranges of elements (function template)
adjacent_difference	computes the differences between adjacent elements in a range (function template)
partial_sum	computes the partial sum of a range of elements (function template)
C library
Defined in header <cstdlib>
qsort	sorts a range of elements with unspecified type (function)
bsearch	searches an array for an element of unspecified type (function)

See also

C documentation for Algorithms