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Copy pathprint_string.h
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84 lines (77 loc) · 1.98 KB
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#ifndef CPP_ALGORITHM_PRINT_STRING_H
#define CPP_ALGORITHM_PRINT_STRING_H
#include <iostream>
#include <string>
namespace PrintString
{
/**
* \brief Manipulate a string to sine wave pattern like snake style.
* \param str the string to be manipulated.
* \return result string
*/
std::string SineWaveString(const std::string& str);
/**
* \brief Print a string in sine wave pattern like snake style.
* \param str input string
*/
void PrintSineWaveString(const std::string& str);
}
// ----------------------------------------------------------------------------
inline std::string PrintString::SineWaveString(const std::string& str)
{
std::string result;
for (int i = 1; i < static_cast<int>(str.size()); i += 4)
{
result += str[i];
}
for (int i = 0; i < static_cast<int>(str.size()); i += 2)
{
result += str[i];
}
for (int i = 3; i < static_cast<int>(str.size()); i += 4)
{
result += str[i];
}
return result;
}
// ----------------------------------------------------------------------------
inline void PrintString::PrintSineWaveString(const std::string& str)
{
for (int i = 1; i < static_cast<int>(str.size()); i += 4)
{
if (i == 1)
{
std::cout << std::string(2, ' ') << str[i];
}
else
{
std::cout << std::string(7, ' ') << str[i];
}
}
std::cout << std::endl;
for (int i = 0; i < static_cast<int>(str.size()); i += 2)
{
if (i == 0)
{
std::cout << str[i];
}
else
{
std::cout << std::string(3, ' ') << str[i];
}
}
std::cout << std::endl;
for (int i = 3; i < static_cast<int>(str.size()); i += 4)
{
if (i == 3)
{
std::cout << std::string(6, ' ') << str[i];
}
else
{
std::cout << std::string(7, ' ') << str[i];
}
}
std::cout << std::endl;
}
#endif