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Valid Sudoku.cpp
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Valid Sudoku.cpp
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class Solution {
public:
bool isValidSudoku(vector<vector<char>>& board) {
bool correct=false;
for(int i=0;i<board.size();i++)
{
for(int j=0;j<board.size();j++)
{
int rowl=0,rowh=0,coll=0,colh=0;
if(i>=0 && i<=2)
{
rowl=0;
rowh=2;
}
else if(i>=3 && i<=5)
{
rowl=3;
rowh=5;
}
else if(i>=6 && i<=8)
{
rowl=6;
rowh=8;
}
if(j>=0 && j<=2)
{
coll=0;
colh=2;
}
else if(j>=3 && j<=5)
{
coll=3;
colh=5;
}
else if(j>=6 && j<=8)
{
coll=6;
colh=8;
}
if(board[i][j]!='.')
{
bool cond1=false,cond2=false,cond3=false;
int ct=0;
for(int col=0;col<board.size();col++)
{
if(board[i][col]==board[i][j])
ct+=1;
}
if(ct==1)
{ cond1=true;
ct=0;
for(int row=0;row<board.size();row++)
{
if(board[row][j]==board[i][j])
ct+=1;
}
if(ct==1)
{
cond2=true;
ct=0;
for(int l=rowl;l<=rowh;l++)
{
for(int h=coll;h<=colh;h++)
{
if(board[l][h]==board[i][j])
ct+=1;
}
}
if(ct==1)
cond3=true;
}
}
if(cond1 && cond2 && cond3 )
correct=true;
else{
correct=false;
return correct;
}
cout<<rowl<<" "<< rowh<<" "<<coll<<" "<<colh<<" "<< cond1<<" "<<cond2<<" "<<cond3<<correct<<"\n";
}
}
}
return correct;
}
};