lower-bound Questions
6
Solved
I was taking MDC101 flutter code lab. I cloned the starter project from the git repository as per the instructions but after clonning done, I executed flutter pub get and it gave me the following e...
Celaeno asked 10/2, 2021 at 5:59
9
Solved
I have a List of object sorted and I want to find the first occurrence and the last occurrence of an object. In C++, I can easily use std::equal_range (or just one lower_bound and one upper_bound)....
Blanketing asked 24/3, 2013 at 20:50
2
Solved
I have this map: map<int, int > items.
Given a key, I want that this map returns the item corresponding to the key if it is present, otherwise the map returns the item with key immediately le...
Hypochondriasis asked 26/11, 2013 at 11:10
3
I understand that the underlying data structure for map in C++ is a self-balancing Binary Search Tree. Since in these data structures, finding a lower bound and an upper bound to a key has lots of ...
Bogosian asked 13/4, 2020 at 17:29
4
I know we need to include some compare function in order to achieve this.
But not able to write for this one.
For example:
Elements of vector={(2,4),(4,2),(5,1),(5,3)}
to find=5
lower_bound() ...
Hiedihiemal asked 1/6, 2014 at 15:19
4
Solved
Is there a function in that uses binary search, like lower_bound but that returns the last item less-than-or-equal-to according to a given predicate?
lower_bound is defined to:
Finds the posit...
Pampa asked 3/4, 2012 at 8:30
8
Solved
Based on the following definition found here
Returns an iterator pointing to the
first element in the sorted range
[first,last) which does not compare
less than value. The comparison is
done...
Zellers asked 22/6, 2011 at 16:52
1
Solved
I have a generic interface interface ListList<E> extends List<List<E>>. For some reasons, I can't cast ListList<? super T> to List<List<? super T>>. Is there any...
Aspirator asked 1/7, 2019 at 18:12
10
Solved
STL provides binary search functions std::lower_bound and std::upper_bound,
but I tend not to use them because I've been unable to remember what they do,
because their contracts seem completely mys...
Randall asked 8/5, 2014 at 23:47
1
Solved
Here is an illustration of my situation. I have a std::map and I want to find the first pair<key,value> where the key is any member of an equivalence class of keys.
#include <map>
str...
South asked 5/1, 2019 at 12:56
4
Solved
I like to use std::algorithm whenever I can on plain arrays. Now I have 2 doubts; suppose I want to use std::lower_bound what happens if the value I provide as argument is not found?
int a[] = {1,...
Megganmeggi asked 1/6, 2012 at 15:53
2
Solved
I saw several articles describing upper bound as Best Case and Lower bound as Worst Case. Meanwhile some articles have given explanations for Upper /Lower bound of Worst Case.
So basically this go...
Anguiano asked 25/5, 2017 at 11:3
1
Solved
For example, I have an array with elements 1,7,9,23,34,47,67,89,123,234,345,567.
I need to know the position of 123.
Show asked 17/11, 2016 at 17:51
1
Solved
I have this simple class:
class MyClass {
public:
int id;
string name;
};
I want to have a vector with pointers to objects of this class that is sorted by the referenced MyClass id. I thought...
Jeffcott asked 10/4, 2016 at 16:3
2
I know that the lower bound of the multiplication of two full matrices is Ω(n^2). Matrix multiplication
I have been trying to prove that the lower bound of the multiplication of two lower triangul...
Caliginous asked 11/3, 2016 at 9:46
8
Solved
I'm converting some C++ code to C# and it calls std::map::lower_bound(k) to find an entry in the map whose key is equal to or greater than k. However, I don't see any way to do the same thing with ...
Conatus asked 6/11, 2009 at 22:29
3
Solved
Ran into this strange behavior when changed upper bound in the implementation, but forgot to change it in the interface. I think last statement should not compile, but it does and returns unexpecte...
Noellanoelle asked 12/11, 2015 at 17:44
1
Solved
I was studying std::upper_bound from http://www.cplusplus.com/reference/algorithm/upper_bound/
and I came across the fact that this might run in linear time on non-random access iterators.
I need ...
Convalesce asked 16/8, 2015 at 10:36
2
Solved
I've encountered a homework problem:
which of these is an asymptotically tight upper bound for the best-case running time of an optimal algorithm that finds the maximum element in an arbitrary arr...
Barksdale asked 12/6, 2015 at 21:31
7
Solved
How can I get the next minimum value to a value provided in python? Is there any inbuilt functions for it?
>>>num_list=[1,2,3,4]
>>> min(num_list)
1
>>> max(num_list)
4
...
Octangular asked 6/4, 2015 at 13:3
3
Solved
In the article http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=binarySearch, the author discusses binary search. He makes a distinction between finding the lowest value where...
Picket asked 8/2, 2015 at 0:15
1
Solved
I wanted to ask how lower_bound in cpp ( C++ ) behaves when it is applied on unsorted array.
I mean when I ran the following program.
#include <iostream>
#include<vector>
#include<...
Averett asked 31/8, 2014 at 13:3
1
I am currently researching the traveling salesman problem, and was wondering if anyone would be able to simply explain the held karp lower bound. I have been looking at a lot of papers and i am str...
Assailant asked 10/4, 2014 at 10:36
4
I know that you should never use std::find(some_map.begin(), some_map.end()) or std::lower_bound, because it will take linear time instead of logarithmic provided by some_map.lower_bound. Similar t...
Discomfort asked 7/3, 2014 at 20:1
2
Solved
I'm trying to use Thrust to detect if each element of an array can be found in another array and where (both arrays are sorted). I came across the vectorized search routines (lower_bound and binary...
Carrillo asked 20/6, 2012 at 17:16
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