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Sudoku_validator.cpp
181 lines (165 loc) · 4.97 KB
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Sudoku_validator.cpp
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#include <iostream>
#include <vector>
#include <algorithm>
bool sudoku_validator(std::vector<std::vector<int>>& grid)
{
bool status = true;
for (int i = 0; i < 9; ++i)
{
std::vector<bool> row_values(9, false);
std::vector<bool> col_values(9, false);
std::vector<bool> subgrid_values(9, false);
for (int r = 0; r < 9; ++r)
{
if (row_values[grid[r][i] - 1] == false)
{
row_values[grid[r][i] - 1] = true;
}
else
{
status = false;
return status;
}
}
for (int c = 0; c < 9; ++c)
{
if (col_values[grid[i][c] - 1] == false)
{
col_values[grid[i][c] - 1] = true;
}
else
{
status = false;
return status;
}
}
if (i == 0)
{
for (int r_sub = i; r_sub < i+3; ++r_sub)
{
for (int c_sub = i; c_sub < i+3; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
}
else if (i % 3 == 0)
{
for (int r_sub = i; r_sub < i+3; ++r_sub)
{
for(int c_sub = 0; c_sub < 3; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
std::fill(subgrid_values.begin(), subgrid_values.end(), false);
for (int r_sub = 0; r_sub < 3; ++r_sub)
{
for(int c_sub = i; c_sub < i+3; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
std::fill(subgrid_values.begin(), subgrid_values.end(), false);
if (i == 6)
{
for (int r_sub = i; r_sub < i+3; ++r_sub)
{
for(int c_sub = 3; c_sub < 6; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
std::fill(subgrid_values.begin(), subgrid_values.end(), false);
for (int r_sub = 3; r_sub < 6; ++r_sub)
{
for(int c_sub = i; c_sub < i+3; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
}
std::fill(subgrid_values.begin(), subgrid_values.end(), false);
for (int r_sub = i; r_sub < i+3; ++r_sub)
{
for (int c_sub = i; c_sub < i+3; ++c_sub)
{
if (subgrid_values[grid[r_sub][c_sub] - 1] == false)
{
subgrid_values[grid[r_sub][c_sub] - 1] = true;
}
else
{
status = false;
return status;
}
}
}
}
}
return status;
}
int main()
{
std::vector< std::vector<int> > sudoku_grid;
for (int i = 0; i < 9; i++)
{
std::vector<int> row;
for (int j = 0; j < 9; j++)
{
int n;
std::cin >> n; std::cin.ignore();
row.push_back(n);
}
sudoku_grid.push_back(row);
}
bool result = sudoku_validator(sudoku_grid);
if (result)
{
std::cout << "true\n";
}
else
{
std::cout << "false\n";
}
}