Category : sorting

I would like to benchmark various sorting algorithms using Google Benchmark. If I use static void StdSort(benchmark::State& state) { auto v = generate_random_vector(state.range(0)); for (auto _ : state) std::sort(std::begin(v), std::end(v)); } BENCHMARK(StdSort)->Arg(10)->Arg(1000)->Arg(1’000’000); I will end up sorting a pre-sorted vector most of the time. I read in the manual that I could use manual timing ..

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class Solution { public: int sum=0,n; int arrayPairSum(vector<int>& nums) { sort(nums,nums+2*n); for(i=0;i<2*n;i=i+2){ sum=sum+nums[i]; } return sum; } }; I wrote a class but its showing me following error. Line 5: Char 23: error: invalid operands to binary expression (‘vector’ and ‘int’) sort(nums,nums+2*n); ~~~~^~~~ /usr/bin/../lib/gcc/x86_6 How should I remove this error? Source: Windows Que..

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I want to use "myfun" comparator function for sorting inside the class. Is there any easy way to do so? class Solution{ public: //COMPATATOR FUNCTION bool myfun(pair <string,string>a, pair <string,string>b){ if(a.second==b.second){ return a.first>a.first; } else{ return a.second<b.second; } }; // THE FUNCTION WHERE I WANT TO USE vector<string> winner(string arr[],int n) { unordered_map <string,int> dic; ..

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