c++ vector element search

Embarrassed Eland answered on December 3, 2020 Popularity 10/10 Helpfulness 5/10

answer c++ vector element search

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c++ vector element search

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#include <algorithm>
#include <vector>
vector<int> vec; 
//can have other data types instead of int but must same datatype as item 
std::find(vec.begin(), vec.end(), item) != vec.end()

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Source: stackoverflow.com

Tags: c++ element search vector

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Contributed on Dec 04 2021

Embarrassed Eland

0 Answers Avg Quality 2/10

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c++ find element in vector

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auto it = find(vec.begin(),vec.end(), item)!
if(it != vec.end()){
 	 int index = it - vec.begin();
}

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Source: Grepper

Tags: c++

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Contributed on Dec 03 2020

Troubled Tamarin

0 Answers Avg Quality 2/10

find element in vector

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    it = find (vec.begin(), vec.end(), ser);
    if (it != vec.end())
    {
        cout << "Element " << ser <<" found at position : " ;
        cout << it - vec.begin() << " (counting from zero) \n" ;
    }
    else{
        cout << "Element not found.\n\n";
    }

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Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Jun 08 2022

it's_flat

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vector search by element

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#include <vector> // vector 
#include <algorithm> // find 
#include <iostream> // cout 
using namespace std;
int main()
{
    vector<int> nums = {1,2,3,4,5,6,7,8,9};
    bool isSorted = is_sorted(nums.begin(), nums.end());
    if(isSorted){
        cout << "Using binary search: " << endl;
        if(binary_search(nums.begin(), nums.end(), 9))
            cout << "found it" << endl;
        else
            cout << "not here" << endl;
    }
    else{
        cout << "Using std::find";
        if(std::find(nums.begin(), nums.end(), 9) != nums.end())
            cout << "found it" << endl;
        else
            cout << "not here" << endl;
    }
}

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Source: stackoverflow.com

Tags: c++

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Contributed on Aug 21 2021

intricate_symbol

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c++ vector element search

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