C++ STL set::lower_bound() function: Here, we are going to learn about the lower_bound() function of set in C++ STL (Standard Template Library).
C++ std::lower_bound() Function std::lower_bound()is an STL library function, which comes under the algorithm header library and finds the lower bound of the searching element in a range. Lower bound means the least element in the range which is greater or equal to the searching element....
Illustrates how to use the lower_bound Standard Template Library (STL) function in Visual C++.Copy template<class ForwardIterator, class T> inline ForwardIterator lower_bound( ForwardIterator First, ForwardIterator Last, const T& Value )
Illustrates how to use the lower_bound Standard Template Library (STL) function in Visual C++.Copy template<class ForwardIterator, class T> inline ForwardIterator lower_bound( ForwardIterator First, ForwardIterator Last, const T& Value )
In addition to lower_bound there is also upper_bound C++ reference The function returns an iterator to the first value that is strictly greater than yours. If it returns begin() then all of them are, otherwise subtract one from the resulting iterator to get the value you are looking for....
could return any iterator in[iter,last)no iterator after itercan be returned See also equal_range returns range of elements matching a specific key (function template) partition divides a range of elements into two groups (function template) ...
缘起:Codeforces Round #555 (Div. 3), problem: (E) Minimum Array 这道题目难度不大,大概在div2 C题左右 但是有个关键点就是stl中lowerbound和set自带的lowerbound差别, 很naive的我想着这两个都是o(logn)的,事实上,t了无数发后才发现标程是 s.lower_bound(x)而我是(s.begin(),s.end(),x) 差别...
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Suppose I want to get the index of the lower_bound of a value in a set and if i type cout<<set.lower_bound(number)-set.begin()<<endl; It is showing an error: no match for ‘operator-’ The same goes for maps as well, However for arrays and vectors if i use lower...
lower_bound/upper_bound allways work on vetor/array sorted by an order determined by some comparator. A comparator is function (or something usable like a function) which returns consistent result while comparing elements. In particular it must allways be true thatif a<b && b<c then a<c....