/
my_lib.cpp
executable file
·55 lines (50 loc) · 1.11 KB
/
my_lib.cpp
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template <typename T>
bool next_vector_by_left_first( std::vector< T >& iv,
T fst, T lst );
template <typename T>
bool prev_vector_by_left_first( std::vector< T >& iv,
T fst, T lst );
template <typename T>
bool next_vector_by_left_first( std::vector< T >& iv,
T fst, T lst ) {
std::vector< T > v_tmp;
while ( !iv.empty() ) {
if ( iv.back() < lst ) {
iv.back()++;
while ( !v_tmp.empty() ) {
v_tmp.pop_back();
iv.push_back( fst );
}
return true;
}
v_tmp.push_back( iv.back() );
iv.pop_back();
}
while ( !v_tmp.empty() ) {
iv.push_back( v_tmp.back() );
v_tmp.pop_back();
}
return false;
}
template <typename T>
bool prev_vector_by_left_first( std::vector< T >& iv,
T fst, T lst ) {
std::vector< T > v_tmp;
while ( !iv.empty() ) {
if ( iv.back() > fst ) {
iv.back()--;
while ( !v_tmp.empty() ) {
v_tmp.pop_back();
iv.push_back( lst );
}
return true;
}
v_tmp.push_back( iv.back() );
iv.pop_back();
}
while ( !v_tmp.empty() ) {
iv.push_back( v_tmp.back() );
v_tmp.pop_back();
}
return false;
}