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lower bound c++

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Worthy Warrior answered on April 19, 2021 Popularity 10/10 Helpfulness 1/10

answer lower bound c++

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lower bound c++

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The lower_bound() method in C++ is used to return an iterator pointing to the first element in the range [first, last) which has a value not less than val.

Popularity 10/10 Helpfulness 1/10 Language cpp

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Contributed on Apr 19 2021

Worthy Warrior

0 Answers Avg Quality 2/10

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lower_bound in C++

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// CPP program to illustrate
// std :: lower_bound
#include <bits/stdc++.h>
 
// Driver code
int main()
{
    // Input vector
    std::vector<int> v{ 10, 20, 30, 30, 30, 40, 50 };
 
    // Print vector
    std::cout << "Vector contains :";
    for (unsigned int i = 0; i < v.size(); i++)
        std::cout << " " << v[i];
    std::cout << "\n";
 
    std::vector<int>::iterator low1, low2, low3;
     
    // std :: lower_bound
    low1 = std::lower_bound(v.begin(), v.end(), 30);
    low2 = std::lower_bound(v.begin(), v.end(), 35);
    low3 = std::lower_bound(v.begin(), v.end(), 55);
 
    // Printing the lower bounds
    std::cout
        << "\nlower_bound for element 30 at position : "
        << (low1 - v.begin());
    std::cout
        << "\nlower_bound for element 35 at position : "
        << (low2 - v.begin());
    std::cout
        << "\nlower_bound for element 55 at position : "
        << (low3 - v.begin());
 
    return 0;
}

Popularity 10/10 Helpfulness 4/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Apr 23 2022

Fierce Fowl

0 Answers Avg Quality 2/10

lower and upper bound c++

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Iterator lower_bound (Iterator first, Iterator last, const val) 
lower_bound returns an iterator pointing to the first element in the range [first,last) which has a value not less than ‘val’. 

Iterator upper_bound (Iterator first, Iterator last, const val) 
upper_bound returns an iterator pointing to the first element in the range [first,last) which has a value greater than ‘val’.         
                                                                            
If the value is not present in the vector then it returns the end iterator.

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Apr 06 2022

Elegant Elk

0 Answers Avg Quality 2/10

lower bound and upper bound in c++

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#include<bits/stdc++.h>
using namespace std;

int main(){
    int n;cin>>n;
    vector<int>v;

    for(int i=0;i<n;i++){
        cin>>v[i];
    }
    sort(v.begin(),v.end());


    //lower bound for vector
    auto pointer1 = lower_bound(v.begin(), v.end(), 7);
    cout<<(*pointer1)<<endl;

    //lower bound for array;
    int array[n];
    for(int i=0;i<n;i++){
        cin>>array[i];
    }
    sort(array,array+n);
    //lowerbound
    int *pointer2 = lower_bound(array, array+n, 7);

    //if you want upper bound then just replace lower_bound with upper_bound
}

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Source: Grepper

Tags: c++

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Contributed on Sep 04 2021

Breakable Bison

0 Answers Avg Quality 2/10

lower bound c++

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