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how to declare comparator for set of pair

karrupt answered on April 3, 2022 Popularity 3/10 Helpfulness 9/10

answer how to declare comparator for set of pair

how to declare comparator for set of pair

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// custom comparator for set< pair<int,int> > 
struct comp {
	// operator() overloading    
    bool operator() (const pair<int, int>&a, const pair<int, int>&b){
        if((a.second - a.first)  > (b.second - b.first)){
            return true;
        }
        else if(a.second - a.first == b.second - b.first){
            return a.first < b.first;
        }
        return false;
    }
};

// declaration of set
set<pair<int, int>, comp> s;

Popularity 3/10 Helpfulness 9/10 Language cpp

Source: Grepper

Tags: c++ comparator declare set

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Contributed on Apr 03 2022

karrupt

0 Answers Avg Quality 2/10

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how to declare comparator for set of pair

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