75 lines
1.5 KiB
C++
75 lines
1.5 KiB
C++
/*
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VIM: let b:cf5build="clang -std=c++20 -O2 -pthread -lstdc++ -I. {SRC} -o {OUT}"
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VIM: let b:cf5run="{OUT}"
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*/
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#include <iostream>
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#include <exception>
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#include <chrono>
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#include <vector>
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/*
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Problem Description
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For given set of N elements print all possible subsets.
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Sample inputs - Expected outputs
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{"a"} ->
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<- empty set
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a
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{"a", "b"} ->
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<- empty set
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a
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b
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a b
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Input corner cases
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Empty input set yields to one empty subset.
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*/
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void printAllSubsets(const std::vector<std::string> &inputSet, std::ostream &os)
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{
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std::vector<bool> subset(inputSet.size(), false);
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while (){
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std::cout << '[';
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for (size_t i = 0; i < inputSet.size(); ++i){
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if (subset[i]){
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std::cout << inputSet[i] << ' ';
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}
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}
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std::cout << ']' << std::endl;
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std::
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}
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std::vector<std::string>
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}
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int main ( void )
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{try{
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auto begin = std::chrono::high_resolution_clock::now();
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//......
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const std::vector<std::string> inputSet = {"a", "b", "c", "d"};
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printAllSubsets(inputSet, std::cout);
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auto end = std::chrono::high_resolution_clock::now();
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std::chrono::duration<double> seconds = end - begin;
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std::cout << "Time: " << seconds.count() << std::endl;
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return 0;
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}
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catch ( const std::exception& e )
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{
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std::cerr << std::endl
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<< "std::exception(\"" << e.what() << "\")." << std::endl;
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return 2;
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}
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catch ( ... )
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{
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std::cerr << std::endl
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<< "unknown exception." << std::endl;
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return 1;
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}}
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