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Tr (Transpose)

Abstract

Tr() are the transpose functions for std::vector<std::vector<T>>.
Tr() は std::vector<std::vector<T>> を転置するための関数です.

Header file

namespace sstd{
    template <typename T> std::vector<std::vector<T>> Tr(const std::vector<std::vector<T>>&  rhs);
    template <typename T> std::vector<std::vector<T>> Tr(      std::vector<std::vector<T>>&& rhs);
}

Usage

Transpose. Ex: 1

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    std::vector<std::vector<int>> vvec = {
        { 1, 2, 3 }
    };
    sstd::printn(vvec);

    std::vector<std::vector<int>> vvecTr = sstd::Tr(vvec);
    sstd::printn(vvecTr);
}
  • Execution result 
    vvec = [[1 2 3]]
vvecTr = [[1] [2] [3]]

Transpose. Ex: 2

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    std::vector<std::vector<int>> vvec = {
        { 1,  2,  3}, 
        { 4,  5,  6}, 
        { 7,  8,  9}
    };
    sstd::printn(vvec);

    std::vector<std::vector<int>> vvecTr = sstd::Tr(vvec);
    sstd::printn(vvecTr);
}
  • Execution result 
    vvec = [[1 2 3] [4 5 6] [7 8 9]]
vvecTr = [[1 4 7] [2 5 8] [3 6 9]]

Transpose. Ex: 3

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    std::vector<std::vector<int>> vvec = {
        { 1}, 
        { 2,  3}, 
        { 4,  5,  6}
    };
    sstd::printn(vvec);

    std::vector<std::vector<int>> vvecTr = sstd::Tr(vvec);
    sstd::printn(vvecTr);
}
  • Execution result 
    vvec = [[1] [2 3] [4 5 6]]
vvecTr = [[1 2 4] [0 3 5] [0 0 6]]

Implementation